Yes, I've noticed this too. It seems they are really Buchannon anti-war conservatives who refuse to identify with the party and therefore call themselves Libertarians.
There is a bunch of them, but I doubt the Libertarian party claims them and the reality is that they are small "l"(libertine independents) George Will despises Bush and by connection, the Republican party, in exactly the same way as Buchannon and others.
I think Rush put it well today that he disagrees with some of the Bush program, but when it come to damaging the party in a election cycle, he is not going to participate.
George Will does not have that sort of class and prefers to sell himself as a detractor, even if it helps Democrats.
I don't appreciate his contribution any longer........:-(
Never was a fan of his, something about that bow tie.