I'm buying ads for Policits is the Mind Killer already. That's one of the other few I'm experimenting with. I don't think people search for "politics" in general. Again, people search for very specific things and already have their minds made up.. so it's more likely that someone would search for "proof that Obama is a Muslim" or "why do liberals hate America?" than something as neutral and high-level as "politics". So coming up with decent keywords for this one has been harder than expected.