Over the last few days, I've had people go to my proxies and download 20MB+ of stuff from RapidShare. In the last two days I've had over 50MB of files downloaded in just the last 48 hours.
I shrugged it off because it didn't affect me, but the last 24 hours my server crashed twice and it's been going slow and timing out the entire day.
I have banned Rapidshare (using a PHP redirect instead of the Glype Blacklist, I can't get the blacklist to work ).
Just a warning, I recommend you ban Rapidshare as well!