Crossing a line

I've enjoyed Kathy Sierra's blog, Creating Passionate Users, quite a number of times, and I was very disturbed to read about her recent troubles. How is it that the RIAA can get ISPs to roll over on alleged 10-year-old file-downloaders, but nobody will roll over on someone making death threats? I don't want to get into a long and pointless discussion about the way people behave online, but I will say this: Kathy, don't let the bastards get you down.