I'd love to see a site where webmasters can go and discuss sites that brought them huge traffic from their banner/text link ads. You'd have to post a sample of your ad etc. Only so many sites could join though because of competition. What do you think? Pedia7
Why would people want to give away where they are getting all their traffic from. Doesn't make sense if you tell them the exact site. If others know then they will only also use it and then take away a majority of your visitors.
john269 is right, webmasters although many are willing to share tips to lead you in the right direction, they won't give every little detail on how they make their money.
Of course you'd love to see a site like that. I guess we all would. But I don't think that's ever gonna happen.
I would never give away that information. Tips are ok, but not everything. If someone is crazy enough to talk about that, then please let me see what they say!