BTC Clicks is another great ad rotator which gives you an opportunity to claim free Bitcoins for visiting sites.
It gives you around 20 sites to visit each day with an average of 278.7 Satoshi per visit. This is based on my tour of available ads which I did minutes ago. It took me 20 minutes of leisure surfing and after that I was 5.575 Satoshi richer. Not bad at all.