Here's a neat trick. Try it at home.
Pick someone you hate. Doesn't matter why.
Find their website.
Find some random paragraph on their website.
Send a letter to their Internet provider complaining that that paragraph is a copyright violation, and invoke the DMCA. You don't even have to know what DMCA stands for. And of course the paragraph doesn't have to be a copyright violation. Just say that you're the copyright holder and the paragraph in question was copied out of your senior thesis in high school without your permission.
Nine out of 10 times, that's all it takes. Your enemy gets kicked off his Internet provider and his account is closed down. Ta-da! Instant vigilante justice.
Many, many ...