Hey I just came across ComicAd Network which hails itself as the successor of Project Wonerful. I'm giving it a whirl, I hope it works out well for everyone. It will be interesting to hear other people's experiences.
It's funny I was just thinking about that old site the other week and how my super old comic I used to use that for ads. I have to look into this one and see how to get it going. Thanks boss, you're the gift that keeps on giving.