Here is just a taste of what it can do:
Facebook Connect - Allow, or force, users to register and login with their Facebook info - a login widget included
User Profiles - Automatically fill in fields in user profiles when they register
Autopost - Make it simple to post new content (custom post types as well!) to user's walls, fan pages, events, or notes
Comments - Import comments made on Facebook about a post into your WordPress site
Like and Send Buttons - With every customization option imaginable - place on posts, pages, custom post types, or with available shortcodes
OpenGraph - Have complete control over the thumbnail image posted to facebook when users like/send or you autopost
Facebook Albums - Display images from a Facebook album - as a widget or using new icon in page/post editor
Facebook Events - Show upcoming facebook events in a sidebar or with shortcodes
Fan Page Widgets - Like box, facepile, and recommendations - with complete customization options built right in
It's entirely MultiSite and BuddyPress ready too!
