Doing a Google search for DCMA False Claims leads to about 40,000 results currently, the first one being an organization that claims 4,000 videos on YouTube violate "their" copyright.
Well like I said, 3 strikes is a great policy. I honestly can't see a person being called a pirate 3 times without being one, unless someone is out to get them.
But then, if someone is out to get ya, they'll do anything...