But there are only 10 sites on the front page of Google results, being on the 1st page makes a huge difference in traffic, everybody wants to be there and nobody wants the competition.
I've learned many "secrets" through other webmasters. In fact many made me some OK $(keyword "OK"). The fact is small-time webmasters are flooding the internet and the competition among everyone online is huge. Nobody makes money online anymore without a filthy amount of work or previous experience. Also the webmasters that you think are making the most money are actually just the ones that are making the most off of webmasters like you.
if you have a niche making alot per click it would be stupid to tell every one about it. Their is a lot of good info on thso forum + alot of secrets been shared all the time.