In case you ever wondered what motivates someone like Gateway Pundit, here's your answer: pure hatred.
Jim Hoft put up a blog post today titled "This One's For You, Mary Jo," referencing Mary Jo Kopechne, the woman who died in Kennedy's 1969 car accident (the source of numerous right-wing conspiracy theories). Hoft also featured a picture of the car being pulled out of the river. Pretty hard to see any motivation for Hoft posting that other than pure spite.
Of course, we learned quite a bit about Jim Hoft's character when he posted a race-baiting video from a white supremacist website and refused to take it down.