Marshall - 4:19 pm on Apr 9, 2012 (gmt 0)
Just a follow up. I was curious and checked a popular online store to see what they ask for when you login with facebook:
I can see their reasoning behind it, that being targeting ads, but as pointed out, it asks for a lot of your friends' information which your friends may not want to share. I personally feel my friends do not have a right to share information about me with third parties without my consent.
On a side note, I do not understand why they want the user's photos.