I find the "stackoverflow" style app to work pretty well regarding getting and finding answers, but it seems like Jeff/Joel don't trust it to work when they break things out into all these other sites like this one. Do people really just browse these type sites? And even if they do, doesn't tagging solve most of that?
In my opinion, there are too many sites under this umbrella and when I have a questions I am not sure where it shall be posted anymore.