Ironically I remember it bringing me to reddit a few times and I did not like it at all at the time haha. I just wanted to see more crazy websites and read the SU comments. It was always fun to find yourself on some website through some other means, and then checking to see if there was any comments about it on stumble upon and being pleasantly surprised when there was
Nothing really, although I imagine if a particular instance was getting overrun with bots the admin or mods would probably step in and possible prevent new accounts from signing up or something