Photobucket account being closed

I use a site infrequently that punishes hotlinking from their resources by permanently tagging the person's usertitle as "bandwidth thief" and banning him if he does it further. Something like that might be in order here, if bandwidth thieves are a problem

How exactly? The people hotlinking don't necessarily have to be users here. I mean, Fiel can make a shock image (or a sternly worded warning) show up to those not on the whitelist for loading the images at worst, but beyond that not too much else can be done.