This is what is scaring away most of the site visitors. Each permission has a reason for being asked for:
"&scope=email,friends_about_me,user_about_me"
email: to notify you when a match is found. an access_token grants us knowledge of only the users email and not his friends'. This cannot be used for viral email harvesting.
friends_about_me: To seperate views based on gender.
user_about_me: to help decide which view is to be "initially " displayed based on the users' gender.
Why do you need to segregate based on gender, anyway? Boys can crush on boys, and girls can crush on girls. If they discover that they are a mutual crush, why deny them the fun?
If you really want to filter views, let the user make a explicit decision to filer view based on gender, using a drop-down menu or something.
Ah ok, fair enough. I figured you were using it to make only girls available to boys, and vice versa.
Still, if that permission is giving you problems because of people's reactions, just showing the entire friend list (with paging, of course) may not be a bad idea.