What's Wrong With Moveon.org?

I don't get the conservative bashing of moveon.org. Yes, it's a progressive organization. But are members of moveon.org really the root of all evil? In response to the Iraq War funding bill, John McCain says "This vote may win favor with MoveOn and liberal primary voters, but it's the equivalent of waving a white flag to al Qaeda." He's implying that only liberals and moveon.org members want to end the war in Iraq. 63% of Americans want to end the war. They are not all liberals and members of moveon.org. What really bothers conservatives is that they have not been able to utilize the power of the Internets as effectively as progressive groups have.