diff --git a/plugins/vote/controllers/vote_plugin_admin_controller.rb b/plugins/vote/controllers/vote_plugin_admin_controller.rb
new file mode 100644
index 0000000..3a8cd88
--- /dev/null
+++ b/plugins/vote/controllers/vote_plugin_admin_controller.rb
@@ -0,0 +1,18 @@
+class VotePluginAdminController < AdminController
+
+  def index
+    settings = params[:settings]
+    settings ||= {}
+    settings.each do |k, v|
+      settings[k] = settings[k].map{|v| v.to_i }.reject{|v| v==0} if k.start_with?('enable_vote')
+    end
+
+    @settings = Noosfero::Plugin::Settings.new(environment, VotePlugin, settings)
+    if request.post?
+      @settings.save!
+      session[:notice] = 'Settings succefully saved.'
+      redirect_to :action => 'index'
+    end
+  end
+
+end
diff --git a/plugins/vote/controllers/vote_plugin_profile_controller.rb b/plugins/vote/controllers/vote_plugin_profile_controller.rb
new file mode 100644
index 0000000..aa1e3a8
--- /dev/null
+++ b/plugins/vote/controllers/vote_plugin_profile_controller.rb
@@ -0,0 +1,57 @@
+class VotePluginProfileController < ProfileController
+
+  before_filter :login_required, :only => [:vote]
+
+  def vote
+    model = params[:model].to_sym
+    vote = params[:vote].to_i
+    settings = Noosfero::Plugin::Settings.new(environment, VotePlugin)
+    model_settings = settings.get_setting("enable_vote_#{model}")
+
+    unless model_settings && model_settings.include?(vote)
+      render_access_denied
+      return
+    end
+
+    object = target(model)
+    vote_target(object, vote)
+
+    render :update do |page|
+      model_settings.each do |v|
+        page.replace "vote_#{model}_#{params[:id]}_#{v}", instance_eval(&controller.vote_partial(object, v==1, false))
+      end
+    end
+  end
+
+  include VotePluginHelper
+
+  def reload_vote
+    model = params[:model].to_sym
+    vote = params[:vote].to_i
+    object = target(model)
+
+    render :update do |page|
+      page.replace "vote_#{model}_#{params[:id]}_#{vote}", instance_eval(&controller.vote_partial(object, vote==1, true))
+    end
+  end
+
+  protected
+
+  def target(model)
+    case model
+      when :article
+        profile.articles.find(params[:id])
+      when :comment
+        profile.comments_received.find(params[:id])
+    end
+  end
+
+  def vote_target(object, vote)
+    old_vote = user.votes.for_voteable(object).first
+    user.votes.for_voteable(object).each { |v| v.destroy }
+    if old_vote.nil? || old_vote.vote != vote
+      user.vote(object, vote)
+    end
+  end
+
+end
diff --git a/plugins/vote/lib/vote_plugin.rb b/plugins/vote/lib/vote_plugin.rb
new file mode 100644
index 0000000..139ca70
--- /dev/null
+++ b/plugins/vote/lib/vote_plugin.rb
@@ -0,0 +1,49 @@
+class VotePlugin < Noosfero::Plugin
+
+  def self.plugin_name
+    "Vote Plugin"
+  end
+
+  def self.plugin_description
+    _("Provide buttons to like/dislike a articles and comments.")
+  end
+
+  def stylesheet?
+    true
+  end
+
+  def js_files
+    'vote_actions.js'
+  end
+
+  def self.enable_vote_article_default_setting
+    [-1, 1]
+  end
+
+  def self.enable_vote_comment_default_setting
+    [-1, 1]
+  end
+
+  def self.voters_limit_default_setting
+    6
+  end
+
+  include VotePluginHelper
+
+  def comment_actions(comment)
+    like = vote_partial(comment)
+    dislike = vote_partial(comment, false)
+    lambda do
+      [{:link => instance_eval(&dislike), :action_bar => true}, {:link => instance_eval(&like), :action_bar => true}]
+    end
+  end
+
+  def article_header_extra_contents(article)
+    like = vote_partial(article)
+    dislike = vote_partial(article, false)
+    lambda do
+      content_tag('div', instance_eval(&dislike) + instance_eval(&like), :class => 'vote-actions')
+    end
+  end
+
+end
diff --git a/plugins/vote/lib/vote_plugin_helper.rb b/plugins/vote/lib/vote_plugin_helper.rb
new file mode 100644
index 0000000..dfa4ee4
--- /dev/null
+++ b/plugins/vote/lib/vote_plugin_helper.rb
@@ -0,0 +1,24 @@
+module VotePluginHelper
+
+  def vote_partial(target, like = true, load_voters=false)
+    vote = like ? 1 : -1
+    like_action = like ? 'like' : 'dislike'
+    type = target.kind_of?(Article) ? 'article' : target.kind_of?(Comment) ? 'comment' : nil
+
+    lambda do
+      settings = Noosfero::Plugin::Settings.new(environment, VotePlugin)
+
+      if settings.get_setting("enable_vote_#{type}").include?(vote)
+
+        voters = !load_voters ? nil : target.votes.where(:vote => vote).includes(:voter).limit(settings.get_setting('voters_limit')).map(&:voter)
+        active = user ? (like ? user.voted_for?(target) : user.voted_against?(target)) : false
+        count = like ? target.votes_for : target.votes_against
+
+        render(:partial => 'vote/vote.rhtml', :locals => {:target => target, :active => active, :action => like_action, :count => count, :voters => voters, :vote => vote, :model => type })
+      else
+        ""
+      end
+    end
+  end
+
+end
diff --git a/plugins/vote/public/style.css b/plugins/vote/public/style.css
new file mode 100644
index 0000000..4d6041a
--- /dev/null
+++ b/plugins/vote/public/style.css
@@ -0,0 +1,68 @@
+.vote-actions {
+  position: absolute;
+  top: 40px;
+  right: 0px;
+}
+
+.action {
+  float: right;
+  font-size: 8pt;
+}
+
+#article .action a {
+  text-decoration: none;
+}
+
+#article .action .like-action-active:hover {
+  color: #156E16;
+}
+
+#article .action .like-action-active {
+  color: #2A8C32;
+}
+
+#article .action .action-icon {
+  top: -1px;
+  left: -2px;
+  position: relative;
+  margin-left: 2px;
+}
+
+.action .dislike:before {
+  content: "\25bc";
+}
+
+.action .like:before {
+  content: "\25b2";
+}
+
+.dislike-action .like-action-counter {
+  border-left: 1px solid rgba(75,83,94,.3);
+  padding-left: 4px;
+}
+
+.action .vote-detail {
+  position: absolute;
+  width: 120px;
+  border: 1px solid #888a85;
+  background-color: #efefef;
+  padding-right: 2px;
+  height: auto;
+  display: block;
+  z-index: 12;
+}
+
+#article .action .vote-detail ul {
+  float: left;
+  padding: 5px;
+  margin: 0px;
+}
+
+#article .action .vote-detail li {
+  margin: 0 0 2px 0;
+  list-style-type: none;
+}
+
+#article .action .vote-detail img {
+  vertical-align: bottom;
+}
diff --git a/plugins/vote/public/vote_actions.js b/plugins/vote/public/vote_actions.js
new file mode 100644
index 0000000..86268af
--- /dev/null
+++ b/plugins/vote/public/vote_actions.js
@@ -0,0 +1,26 @@
+var openEvent = null;
+jQuery( document ).ready(function( $ ) {
+  $(".vote-action").live('mouseenter', function() {
+    var div = $(this);
+    if(openEvent==null)
+      openEvent = setInterval(function() { openVotersDialog(div); }, 500);
+  });
+  $(".vote-action").live('mouseleave', function() {
+    clearTimeout(openEvent);
+    openEvent = null;
+  });
+});
+
+function openVotersDialog(div) {
+  var $ = jQuery;
+  clearTimeout(openEvent);
+  var url = $(div).data('reload_url');
+  hideAllVoteDetail();
+  $.post(url);
+}
+
+jQuery('body').live('click', function() { hideAllVoteDetail(); });
+
+function hideAllVoteDetail() {
+  jQuery('.vote-detail').fadeOut('slow');
+}
diff --git a/plugins/vote/test/functional/vote_plugin_admin_controller_test.rb b/plugins/vote/test/functional/vote_plugin_admin_controller_test.rb
new file mode 100644
index 0000000..3412a21
--- /dev/null
+++ b/plugins/vote/test/functional/vote_plugin_admin_controller_test.rb
@@ -0,0 +1,30 @@
+require File.dirname(__FILE__) + '/../../../../test/test_helper'
+require File.dirname(__FILE__) + '/../../controllers/vote_plugin_admin_controller'
+
+# Re-raise errors caught by the controller.
+class VotePluginAdminController; def rescue_action(e) raise e end; end
+
+class VotePluginAdminControllerTest < ActionController::TestCase
+
+  def setup
+    @environment = Environment.default
+    @profile = create_user('profile').person
+    login_as(@profile.identifier)
+  end
+
+  attr_reader :environment
+
+  should 'save vote_plugin settings' do
+    post :index, :settings => {"enable_vote_article" => [1], "enable_vote_comment" => [-1]}
+    @settings = Noosfero::Plugin::Settings.new(environment.reload, VotePlugin)
+    assert_equal [1], @settings.settings[:enable_vote_article]
+    assert_equal [-1], @settings.settings[:enable_vote_comment]
+    assert_redirected_to :action => 'index'
+  end
+
+  should 'redirect to index after save' do
+    post :index, :settings => {"enable_vote_article" => [1]}
+    assert_redirected_to :action => 'index'
+  end
+
+end
diff --git a/plugins/vote/test/functional/vote_plugin_profile_controller_test.rb b/plugins/vote/test/functional/vote_plugin_profile_controller_test.rb
new file mode 100644
index 0000000..73db1e3
--- /dev/null
+++ b/plugins/vote/test/functional/vote_plugin_profile_controller_test.rb
@@ -0,0 +1,85 @@
+require File.dirname(__FILE__) + '/../../../../test/test_helper'
+require File.dirname(__FILE__) + '/../../controllers/vote_plugin_profile_controller'
+
+# Re-raise errors caught by the controller.
+class VotePluginProfileController; def rescue_action(e) raise e end; end
+
+class VotePluginProfileControllerTest < ActionController::TestCase
+
+  def setup
+    @profile = create_user('profile').person
+    @article = TinyMceArticle.create!(:profile => @profile, :name => 'An article')
+    @comment = Comment.new(:source => @article, :author => @profile, :body => 'test')
+    @comment.save!
+    login_as(@profile.identifier)
+    @environment = Environment.default
+    @environment.enable_plugin(VotePlugin)
+    self.stubs(:user).returns(@profile)
+  end
+
+  attr_reader :profile, :comment, :environment, :article
+
+  should 'do not vote if user is not logged in' do
+    logout
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    assert_response 401
+  end
+
+  should 'not vote if value is not allowed' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 4
+    assert !profile.voted_on?(comment)
+  end
+
+  should 'not vote in a disallowed model' do
+    xhr :post, :vote, :profile => profile.identifier, :id => environment.id, :model => 'environment', :vote => 1
+    assert profile.votes.empty?
+  end
+
+  should 'like comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    assert profile.voted_for?(comment)
+  end
+
+  should 'unlike comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    assert !profile.voted_for?(comment)
+  end
+
+  should 'dislike comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => -1
+    assert profile.voted_against?(comment)
+  end
+
+  should 'undislike comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => -1
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => -1
+    assert !profile.voted_against?(comment)
+  end
+
+  should 'dislike a liked comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => -1
+    assert profile.voted_against?(comment)
+  end
+
+  should 'like a disliked comment' do
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => -1
+    xhr :post, :vote, :profile => profile.identifier, :id => comment.id, :model => 'comment', :vote => 1
+    assert profile.voted_for?(comment)
+  end
+
+  should 'like article' do
+    xhr :post, :vote, :profile => profile.identifier, :id => article.id, :model => 'article', :vote => 1
+    assert profile.voted_for?(article)
+  end
+
+  should 'update views with new vote state' do
+    xhr :post, :vote, :profile => profile.identifier, :id => article.id, :model => 'article', :vote => 1
+    assert_select_rjs :replace do
+      assert_select "#vote_article_#{article.id}_1"
+      assert_select "#vote_article_#{article.id}_-1"
+    end
+  end
+
+end
diff --git a/plugins/vote/test/test_helper.rb b/plugins/vote/test/test_helper.rb
new file mode 100644
index 0000000..cca1fd3
--- /dev/null
+++ b/plugins/vote/test/test_helper.rb
@@ -0,0 +1 @@
+require File.dirname(__FILE__) + '/../../../test/test_helper'
diff --git a/plugins/vote/test/unit/vote_plugin_test.rb b/plugins/vote/test/unit/vote_plugin_test.rb
new file mode 100644
index 0000000..951f87a
--- /dev/null
+++ b/plugins/vote/test/unit/vote_plugin_test.rb
@@ -0,0 +1,30 @@
+require File.dirname(__FILE__) + '/../../../../test/test_helper'
+
+class VotePluginTest < ActiveSupport::TestCase
+
+  def setup
+    @plugin = VotePlugin.new
+    @person = create_user('user').person
+    @article = TinyMceArticle.create!(:profile => @person, :name => 'An article')
+    @comment = Comment.create!(:source => @article, :author => @person, :body => 'test')
+  end
+
+  attr_reader :plugin, :comment, :article
+
+  should 'have a stylesheet' do
+    assert plugin.stylesheet?
+  end
+
+  should 'have a javascript' do
+    assert plugin.js_files
+  end
+
+  should 'return proc to display partials to vote for comments' do
+    assert plugin.comment_actions(comment).kind_of?(Proc)
+  end
+
+  should 'return proc to display partials to vote for articles' do
+    assert plugin.article_header_extra_contents(article).kind_of?(Proc)
+  end
+
+end
diff --git a/plugins/vote/views/vote/_vote.rhtml b/plugins/vote/views/vote/_vote.rhtml
new file mode 100644
index 0000000..57fce2d
--- /dev/null
+++ b/plugins/vote/views/vote/_vote.rhtml
@@ -0,0 +1,22 @@
+<%
+url = url_for(:controller => 'vote_plugin_profile', :profile => profile.identifier, :action => :vote, :id => target.id, :model => model, :vote => vote)
+reload_url = url_for(:controller => 'vote_plugin_profile', :profile => profile.identifier, :action => :reload_vote, :id => target.id, :model => model, :vote => vote)
+%>
+
+<span id="vote_<%= model %>_<%= target.id %>_<%= vote %>" data-reload_url=<%= reload_url %> class="vote-action action <%= action %>-action">
+
+  <%= link_to_remote content_tag(:span, count, :class=>'like-action-counter') + content_tag(:span, '', :class=>"action-icon #{action}"), :url => url, :html => {:class => "#{active ? 'like-action-active':''} #{user ? '':'disabled'}"} %>
+
+  <% if !voters.blank? %>
+    <span class="vote-detail">
+      <ul>
+      <% voters.each do |voter| %>
+        <li>
+          <%= link_to image_tag(profile_icon(voter, :icon)) + content_tag('span', voter.short_name),
+            voter.url, :title => voter.short_name %>
+        </li>
+      <% end %>
+      </ul>
+    </span>
+  <% end %>
+</span>
diff --git a/plugins/vote/views/vote_plugin_admin/index.rhtml b/plugins/vote/views/vote_plugin_admin/index.rhtml
new file mode 100644
index 0000000..2cbecd6
--- /dev/null
+++ b/plugins/vote/views/vote_plugin_admin/index.rhtml
@@ -0,0 +1,21 @@
+<h1><%= _('Vote settings')%></h1>
+
+<% form_for(:settings) do |f| %>
+
+  <% ['article', 'comment'].each do |model| %>
+    <h5><%= _('Enable on %s:' % model) %></h5>
+    <%= f.check_box("enable_vote_#{model}", {:multiple => true}, 1) + _('Like') %>
+    <%= f.check_box("enable_vote_#{model}", {:multiple => true}, -1) + _('Dislike') %>
+  <% end %>
+  <br/><br/>
+
+  <strong>
+    <%= labelled_form_field _('Limit of voters to display:'), f.text_field(:voters_limit, :size => 3) %>
+  </strong>
+
+  <% button_bar do %>
+    <%= submit_button(:save, _('Save'), :cancel => {:controller => 'plugins', :action => 'index'}) %>
+  <% end %>
+
+<% end %>
+
--
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