What do you prefer , Affiliates or PPC ? Tell reason for your choice. I like PPC but now I'm trying to use Affiliate stuff in my site too. I think that would work long term better than PPC.
I use AdSense too. But its risky to stick just to them. They are wel known for kicking out publishers with a reason or not so its not good to just rely only on them. Also there aren't any other wel paying PPC networks I think next best option is Affiliates.