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I say move into FB whilst you can, that's what we're doing.
I'm assuming this is all ok but I'm not sure if FB would be happy that anybody can load up "criminalforce.net", login with their FB account and access the game in a 10x better interface and have payments not go through FB.
If/when Facebook allow this API to be used for non-canvas apps,
I highly doubt that the FBcredits give you SMS payment for 30%.
I thought it is perfectly possible right now?