Hate the idea. SO's search is decent. This is just the kind of fragmentation that I already don't like about programmers., unix. etc.. You can easily filter your lists by tags, you can easily search by tag.
Where's the benefit?
Where's the benefit?
Well, come to think of it, I think google's support forums suck even more. You can post a problem on google support forums, and pray and hope for an answer from their developers.
I'm not sure that this level of filtering is quite necessary, but I think that the community fragmentation is useful: People go to each site (SO, SE, SU, Programmers, etc) with a specific purpose, and the topics on each site are broken up by tags. Trying to filter both purpose and topic on one site would be problematic.
(Also, the Unix/AskUbuntu/SuperUser debacle is a special case, IMO)