If you are a facebook user then now you would be able to earn credits without paying directly.Facebook has been working on its payment options for Facebook Credits .
Today, it is partnering for the first time with two offer providers so users can earn Credits without having to pay directly.
For users, this means another way to get Credits without paying — this may increase spending on Credits for social games and other applications on Facebook. For developers, that means Credits might be able to bring in more money than they have to date. And for other offer providers, Facebook is now more of a direct competitor, although the payment option is only in early beta testing at this point, and the company’s long-term plans are not yet clear.
Offers are simply online ads, usually drawn from ad networks elsewhere on the web, that let users buy subscriptions and goods, complete surveys, or take other actions in exchange for virtual currency.