Zynga and Rovio are already announcing their support for Google+'s new gaming platform, and many...

|By:, SA News Editor
Zynga and Rovio are already announcing their support for Google+'s new gaming platform, and many others could be lured by Google's (GOOG) low 5% cut on virtual goods sales (Facebook charges 30%). However, Google+'s 25M+ users are still a fraction of Facebook's 750M, and concerns exist about the engagement level of early adopters.