I don't think so, aside from the whole sharing accounts thing. There was also some post on their Tumblr about someone who had a whole bunch of accounts (like 20 I believe?) and they said it was fine as long as their computer could handle that many tabs open. I don't have an absurd amount of accounts like that, though xD I've seen plenty of users with quite a few accounts, though
I'm really happy to be home from school.