Ask HN: What are your experiences with mochiads?

I am playing a game on facebook apps quite regularly, and there seems to be quite an opportunity to make that game more better. There are several clones of it, but not one particular to my taste. So, I have an idea to make that kind of a game, but to my taste, and I would like it to be completely free - no premium, only ads if possible at all. Does any of you use mochiads and particularly mochiads in combination with facebook apps?