Because of the talent that hangs out there... I've seen threads where the the initial question was answered within the first 3 posts... and then go on for another 5 pages (10 posts each) with 800lb SQL gorillas duking it out with 1M+ row test harnesses comparing the executions of 6 or 7 different solutions... I haven't seen that on any other forum.
Heh.... that's the "community" of which I speak. I agree... I've not seen such things on any other forum and, despite the setbacks on the forum software, it's a huge part of the reason why I call SSC "home".