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.