facebook how to know in what applications user is register
i'm building a facebook based mobile application.
every time a user is logging into my server, i want know which of his friends has accepted my application in facebook.
what i'm doing now is that i'm sending my server the list of the user's friend, and returning to him a list of whom from is friend is also a member of my application.
the problem is that this process is real slow when a user have lots of friends..

is there a way throw graph api or FQL to check to which applications a user (or his friend) granted permissions ?
facebook how to know in what applications user is register
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i'm building a facebook based mobile application.
every time a user is logging into my server, i want know which of his friends has accepted my application in facebook.
what i'm doing now is that i'm sending my server the list of the user's friend, and returning to him a list of whom from is friend is also a member of my application.
the problem is that this process is real slow when a user have lots of friends..

is there a way throw graph api or FQL to check to which applications a user (or his friend) granted permissions ?