Has anyone else here had registrations here from IP addresses which resolve to Facebook itself? I had two in quick succession the other night, using firstly just the top characters of the keyboard as the username and then secondly a more sensible name - same IP address - and both used the register with FB option to associate an account to it. In both cases they never came back after registering. Both had similar GMail addresses with the name "geofenced" in and a number. I wonder what they're checking out?