Can't load the page. But I wonder, is it possible to grab all Facebook profile pictures (or at least the public ones), or were they given special access for research purposes?
$ curl -I https://graph.facebook.com/100000624321700/picture
HTTP/1.1 302 Found
(...) Location: https://fbcdn-profile-a.akamaihd.net/hprofile-ak-prn1/573867_100000621711234_930571234_q.jpg
Then it is just a matter of incrementing the number. This might be a fun research project.