I think we know how The_Donald came to be, and lots of folks abandoned the hell out of it as soon as people starting pointing fingers to MOS tactics and other fuckery.
Now there were some outright anti-semitic posts, sure. But, as soon as they cracked down on folks pointing to obvious fuckery from [F] assets, people left in droves. That page pretty much died down a lot right before the election. I'm actually surprised it was still around.