Where did you see the affiliate program? I do not see it anywhere both in this ANN thread as well as on the main site. Can you give me a link to the information where you saw the affiliate program? Regarding signature campaign, I think they should not be in a hurry to launch it. Better to make sure that there is no more bugs on the site first. Focus on building the community through chat and forum, offering some nice offers on the site such as promotion and competition then they can start to launch the signature campaign and other advertisements.
I saw it there, but don't see link to affiliate program, and I don't check this because lack of interest in such affiliate programs. I think you can check this yourself or ask @MintDiceSara for further details.
MintDice's affiliate program also gives you 10% of all generated revenue sent directly to your wallet.