We have that: http://mkjon.es/friend.png http://mkjon.es/friend.png. In addition to data from that, we also look at how many people click "not now" when someon

We have that: http://mkjon.es/friend.png http://mkjon.es/friend.png. In addition to data from that, we also look at how many people click "not now" when someone adds them as a friend. These signals (and a number of other factors) are taken into account when classifying if friend requests are spammy / malicious. (I work on the anti-spam team at Facebook).