Comment by billmalarky

Lijit was the best alternative for me, and I went through a good 5-6 networks. However, their CPM's were significantly less than adsense. Their support is really good though and they do actually have control over their inventory unlike a lot of other ad networks I worked with (many networks claim to be able to block audible/video/popup malicious ads but still allow many to slip through). Technorati is decent I believe (only used them for about a month) but their ads must be served out of an iframe (so they can't be contextual - so less CPM) because their ad servers are so slow and they are page blocking.