Has anyone tried out AlmondNet? the NY Post is using Almond but that's not an undisputed great recommendation. They use behavioral marketing - remember what keywords you're interested in, then serve those up on individual web sites instead of being context-sensitive.
Sorry, never heard of them. Revenue Science does behavioral targeting. I tried them a few months ago. Since they now use Yield manager, the rates are not much better than other Yield manager networks though.
Addition: I've just noticed a few threads on behavioral marketing and it appears Google has it already. I think I'll pass on lesser-knowns...