I have several sites that I'd like to add some sort of revenue-earning to, and in at least 1 case contextual ads probably won't yield very good results. The content also isn't "niche" enough to warrant affiliate ads, and I was wondering if anyone would be able to recommend a CPM/CPC program that i could use across all of them. I'm aware of places such as Adbrite, I'm not sure if i'd require just one large site to get the best out of it though. I'd be interested in hearing other people's experiences, and opinions on what might be the best option to go with.