It seems that the StackOverflow group is becoming quite large now - with StackOverflow, Meta, SuperUser, apps etc.
I just came up with an idea that maybe StackOverflow could have its own search engine which has a scope much larger than the StackOverflow group but much smaller than Google.
To start with this will exclude ALL sites (except, obviously, for the Stack sites - StackOverflow, Meta, SuperUser etc). Users submit technical sites which will then also be searched - for example programming forums or Google Code. Sites will go up for review (i.e. they wont be searched immediately - they will be reviewed first by administrators and users over so many points). If accepted the site will expand the search "scope" of the search engine.
I know there is a lot of stuff which goes on in the background of a search engine - such as indexing which takes a lot of time, but its just a thought and its open to criticism (constructive only please) or positive comments.
Good idea, bad idea? Opinions welcome.
PS this is only a quick thought I came up with 5 minutes ago, and I am currently revising for an exam at 9:30 tomorrow morning so really havent thought much about it - thought I should post this before I forget about it.