Takedown Hall of Shame | Electronic Frontier Foundation
Just in case you're thinking that this SOPA business is a fuss over nothing, than that it is what its supporters say it is – an act targeting pirates and criminals, and that it won't hurt the average innocent internet user – here is a link to a page collating the worst abuses of the existing law in this area, the DCMA, which is what companies currently use to require takedowns of infringing material. Take a look at the list of companies who have used the existing law in a way that was never intended.