Feel free to take a look at my Survey Thread where some dumbass decided to try and cheat it by signing up ~100 connected accounts (They are all similar and usually created on the same day).

I've tagged some of them but after a while it just gets very tedious. Worth noting is that they are not only signing up to my Survey as the user behind all of these accounts actually make 7-20 posts on each account beforehand. Might be a case of plagiarism but I have not looked at that yet.

Thread