With this Fav(orite) Joomla! plugin you can display Like and Dislike buttons on your website articles.
Fav supports K2, Zoo, JomSocial and Joomla articles, so you can show Like/Dislike buttons on the components you want. To see how easy it is, click on the tab "Supported components".
Fav is quick to customize! Just choose your icons and colors with a click, or take advantage of the included Font Awesome icon set. Find out more under the tab "Customization options".