I've just checked again, I don't think I'm describing it properly. On my iPad, if I go into general settings and scroll down, on the left hand side (quite far down) there is a list of apps and what-have-you. If you use the Facebook app (rather than just signing in like you would on an ordinary computer) the Facebook icon should be there. If I click on the icon, it then brings up a list of games that have access to Facebook on my account, and then you can either allow or not allow x