He's just another jealous nobody, in a long line of vacuous nobodies, that hopes to be able to cash in on Rush's name.
As evidenced by the success of books by the Al Frankens and Michael Moores of the world, we have to admit that there is a huge feminized male/airhead female market out there to be tapped that is emotionally unequipped to be able to admit that personal attacks against those with whom they disagree aren't legitimate debate tactics.
If I was a cynical opportunist, I'd be tapping into that useful idiot market, myself.