Topic: My "Libraries" with punBB
I have few sites in Polish:
http://www.cms.rk.edu.pl/ - PHP and CMS
http://www.crpg.rk.edu.pl/ - Baldurs Gate, Icewind Dale and D&D RPG game
http://www.linux.rk.edu.pl/ - Linux
and one small, English:
All of them are based on my RkCMF, integrated with punBB - add forum/index.php to the link to see it (user, comments, forums are used) + those sites run in a multisite - 1 copy of files for all of them (punBB have beed hacked to work nicely with such settings) + all sites have one user system.