What's so bad about SOPA?

Should this man get paid for his songs?  (Yes.)

Update (1/19):  I was happy to see this from Brian Leiter today:  "it seems to me that cyber-space is under-regulated by the law, which
explains why it has become a repository for so much garbage, defamation,
and invasion of privacy, as well as copyright violations.  (It's a
shame, but predictable, that only the latter really gets the