facebook-php-sdk : The Facebook SDK for PHP provides a native interface to the Graph API and Facebook Login. ( https://developers.facebook.com/docs/php )
geshi : GeSHi the Generic Syntax Highlighter converts code to HTML and supports a range of popular languages ( http://qbnz.com/highlighter/ )
twitteroauth : The most popular PHP library for Twitter's OAuth REST API ( https://github.com/abraham/twitteroauth )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a hacking-gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/hacking-gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org