Question about ads on website forums

I have been working on trying to develop the best way to get money from my site http://www.xboxliveclans.com It can be rather hard, this site gets a ton of hits compared to my other regular sites. But, my other sites make a lot more money, which just makes me a little mad. Do you guys have any suggestions?

How about those hover keyword ads, when you hover over them ads pop up. Can you make any good money with those.

And I actually found out that if you make your google ads blend in a little bit, like say the border and background, but make the text link stick out with an opposite color you get better amount of clicks. Has anyone experimented with that? I mean if you blend in the ads too much people are just going to ignore them on a forum.

This is an ongoing struggle with me, I'm sure no one's going to share too many tips or secrets, but if you have any, pm me or post here. I would really appreciate it!

-Erik