When a Facebook connected app or site has access to "your profile" that includes your friends list.
Anyway as I can see that you failed to read for comprehension I must reiterate that allowing next-door to read your Facebook profile in no way authenticates you to the site, nor does it provide them with your profile picture.
Anyway as I can see that you failed to read for comprehension I must reiterate that allowing next-door to read your Facebook profile in no way authenticates you to the site, nor does it provide them with your profile picture.