Today Ted Murphy announced that CPC is now working on SocialSpark. It is not yet available for everyone to use but that is coming within mere days. More tests need to be run but it appears that for now it is working fine.
If you are a blogger and you are on SocialSpark be on the lookout for a brand new option in the Brows opportunities section it is a fuchsia tab that says CPC. That is where you are going to find all the new CPC opps.
For advertisers you can get started with CPC on SocialSpark right away, here is the documentation to learn more about it.