allow user to choose provider scope

[ptone]

A killer feature I've never seen in a FB integration before would be to have a form that allowed the user to choose in advance what permissions they would allow.

Once you are at FB - it is all or nothing. I have declined sites that wanted more access than I was willing to give, but would have been OK with just basic access.

If the requesting site could present some checkboxes before going off to FB - a site might be more likely to get at least some of the perms you're looking for.