I didn't like PPBB format.  it was rather hard and sometimes confusing to use. What I have noticed, is out of the 8 or 9 boxster boards I have saved in my favorites, this is by far the most active.  I am lucky to see 2 new post a day on most and some haven't had post in quite a while.  No offense to the other boards but I find this the best. Everyone seems helpful and very civil.  The boxster spec board is pretty cool, but i find myself spending most of my time on this one.
Kudos to us!!   
 
http://www.ppbb.com/board/main.htm
 http://www.6speedonline.com/forums/boxster-cayman-16/
http://www.renntech.org/forums/index.php?showforum=75
http://www.boxsterforums.com/forums/index.php
http://www.babblers.org/forums/forumdisplay.php?f=5&pp=20&sort=lastpost&order=desc&daysprune=-1
http://www.boxsterspec.com/boxster-garage-f1.html
http://www.planetporsche.net/forums.php
http://www.boxsterspec.com/boxster-garage-f1.html