I am not sure how far you guys have gone with this project. But hear me out...
I dont know if you guys know about www.stackoverflow.com a website for asking questions on programming. Its a high traffic site, and its getting popular very fast. Some of the famous Computer Science nerds including engineers from Google exist there.
The system is relatively simple. If we ignore the wiki part of it, its basically a stripped down forum. Person asks question, other people respond. Incentives on stackoverflow.com include reputation points and badges. Its a very well designed system where people can vote up and down questions just like digg and reddit.
Many people believe this is a prime way to handle communication. Its fast, simple and straight to the point.
However the system that the SO owners use is not open source unforunately. SO was designed using asp.net mvc so even if it was open source, its not very helpful to the PHP community out there.
So TalkPHP should gather up its developers and create a Stackoverflow.com clone and have it open source so everyone can use it for their website. Note that there's already a open source version of it but its in asp.net. I am currently working on this asp.net one and plan to use it for my future website.
the code for this exists on google code and can be downloaded using svn.
well i am not very active, but if you want I can "lead" this project. I've already seen the code in c# and i can tell the php guys where to improve and what to add, etc etc.. I dont want to take on this job, so someone else should probably volunteer.