Can we discuss recent developments in the world of IT on Super User, recent programming news on Stack Overflow, etc.?
I can see reasons why this would be great. We have great informed communities and discussions would be in-depth and insightful. I think people would learn quite a lot, and the quality would be better than the usual found on forums.
On the other hand, we are at Q&A sites, and even with community wiki I imagine this could cause some issues.