Facebook (FB +0.7%) has unveiled a big overhaul for its popular Open Graph social sharing...

|About: Facebook (FB)|By:, SA News Editor

Facebook (FB +0.7%) has unveiled a big overhaul for its popular Open Graph social sharing platform, with an eye towards reducing spam. "Custom actions" from developers that automatically share activity won't be allowed, and an API that allows users to post activity to a friend's wall is gone. On the other hand, Open Graph content with images and location data will be given more prominence. Facebook has already worked to reduce game-related spam, something that appears to be affecting Zynga's results.