I read today that Thomas Nelson has pulled David Barton's book on Thomas Jefferson because of factual errors in it: http://www.npr.org/blogs/thetwo-way/2012/08/09/158510648/publisher-pulls-controversial-thomas-jefferson-book-citing-loss-of-confidence#more
Of course we all suspect that TN has pulled it because of bad press, but given that evangelical historians (who actually have a degree in history) are declaiming the book, that's probably a good thing. We all know that people of all stripes, both liberal and conservative, rally to people and books that say what they want to hear.
But I don't live around liberals and I don't come from a liberal background. I get riled up when people in my circles make God look stupid. There are such things as experts, and they are to be listened to by those who aren't.