The brain trust at Free Republic claim that Snopes.com is left-wing and untrustworthy. (Granted this is somewhat old but a student just brought it to my attention.
Here's an example of the left-wing bias, and here, and here, and here and here and most of the stuff here.
This is one of the clearest examples of what Covington refers to as the Republican war on reality (although it's not fair to use freepers to represent all of the GOP). Their article is correct in that no one should accept Snopes as gospel but that's made abundantly clear here. Then again, what would you expect from a mindset that would post the following:
I have investigated Snopes for a couple of things that my brain will not allow me to remember tonight (sorry) and my conclusion is that they are full of s**t. They are untrustworthy and not just for political stuff. They have an agenda. Someone who will dissemble at all is untrustworthy all the time. Plus they are arrogant, and liberalism is a mental illness.