yeah, I got banned on my last site, I lost quite a bit too.

Its against the TOS to tell people to click, and its probably right too, people are paying for each click, so if people are clicking for no reason then they're wasting their money.

I have a tower ad in the sidebar, and a small one in the header on 1 page in 5, so the ads aren't obtrusive of the site. seems to work ok.