Probably quite low because they don't directly pipe it to the website. Once you do that the assholes will find you.

Now the worst they might do is to try to kill your roll of paper or your office building by sending all black and hoping the printer overheats.

You really can trash a thermal printer by printing too much black... I did it!

It used to be a lot worse, but now it's actually really low (I get to see all the pictures drawn, even if they don't go up into the final gallery).