yep, ip bans are definitely a possibility if you continue to get harassed. However, they're circumvented rather easily if the person has some technological knowledge. Although it does still make things a little more inconvenient, which doesn't hurt.
it's a fair point, I'll try and keep mixing up the times I do these, I don't have any consistent sleeping patterns anyway. I also reckon as time goes on and more of the userbase has titles, they won't get shut down within 2 hours