The likely origination point of most of this, and all the other wild and bottom-feeding Palin accusations is BHO HQ -- through surrogates such as Sullivan and KOS.
That's why Obama continually blames McCain for racist and Muslim "smears," even though McCain's stayed scrupulously away from those. It's projection, pure and simple -- the Obama folk do it, so the Republicans absolutely must be doing the same thing. Obama's zombie followers can't/don't think for themselves, so it's inconceivable to them that anyone on the right can think independently -- all in accordance with their disdain for mainstream America.
I believe the right needs an Obama email about Ayers, Wright and Frank Davis.