First of all, i searched everywhere and did not found useful information. I think can be any kind of hacking/trick. I am sure you saw something like this before. For example, a singer/dj upload a photo on his fan page, tagging fans is not enabled, but there are some "personal accounts" tagged on the pictures. Those "guys" receive tons of friend requests, followers... Can be really useful for collecting targeted friends on fake accounts. Any information about this? BR!