Ask HN: Alternatives to Adsense?

In my opinion there are no good alternatives to AdSense. Depending on your content you might be able to run CPA or CPC advertisements.

http://www.cj.com http://www.peerfly.com http://www.maxbounty.com

You might want to get in touch with the BuySellAds guys. They've been looking for large publishers for a new ad space monetization system of some sort:

http://buysellads.com/publishers/unreserved

As an ex-Opera employee I have to suggest Admarvel. But really there are so many articles on this I suggest you just google it.

AdBrite. As extensive and reliable.

And out of business ;-)