OpenFeint is partnering with Adknowledge to announce a new set of monetization tools for iOS developers called OFX2.0. The new toolset lets developers of freemium games that include virtual currency integrate a pay-per-install network powered by Adknowledge’s Super Rewards directly through OpenFeint. One of the first companies to integrate OFX2.0 will be OpenFeint’s sister YouWeb-incubated social game developer CrowdStar. OpenFeint now serves over 66 million registered users. OFX 2.0 will become available on March 7.