I am looking for some good, high paying ad networks, I am going to put some ads on my upcoming faucet. By good, I mean no viruses/Trojans on the ads, and a high pay rate. Also, Google adsense doesn't pay in Bitcoin but is possibly the best ad network out there, so if you have tips on getting accepted into that post them here too!

EDIT: Thanks for the help guys, I've started my faucet http://bitcoinshowers.com and I've used some of your guy's suggestions!