The Facebook Social plugins let you see what your Facebook friends have liked, commented on or shared on websites across the internet:

• Like Button: The Like button lets users share pages from your site back to their Facebook profile with one click
   
• Send Button: The Send Button allows your users to easily send your content to their friends
   
• Comments: The Comments plugin lets users comment on any piece of content on your site
   
• Activity Feed: The Activity Feed plugin shows users what their friends are doing on your site through likes and comments
   
• Recommendations: The Recommendations plugin gives users personalized suggestions for pages on your site they might like
   
• Like Box: The Like Box enables users to like your Facebook Page and view its stream directly from your website
   
• Login Button: The Login Button shows profile pictures of the user's friends who have already signed up for your site in addition to a login button
   
• Registration: The registration plugin allows users to easily sign up for your website with their Facebook account
   
• Facepile: The Facepile plugin displays the Facebook profile pictures of users who have liked your page or have signed up for your site
   
• Live Stream: The Live Stream plugin lets your users share activity and comments in real-time as they interact during a live event