I hate to be a citation dodger, but partly due to laziness, and partly due to not wanting to send any traffic their way, I didn't bother digging up what site it was. I'm all for paying for expert opinion when a) it's better than I could do and b) the people providing the expertise get the majority of the money. Charging money for unverified, uncompensated answers? Too lame. I am one of those people who used SO/SE for quite some time and finally signed up for an account when I stumbled upon a question I had an answer for. I don't mind giving back, much as I didn't mind contributing to CDDB until Gracenote ruined it. Whatever other gripes I might have with SO/SE, I think it's so successful because of its model.