Why you can never ever trust most "fact checkers"

Starting in 2003 Al Gore was saying that there would be no ice in the arctic in summer.  He said so based on "...selective reading of aggressive estimates regarding future melting" according to Snopes.

Yet Snopes rated the claim "Al Gore predicted that Earth’s “ice caps” will melt away by 2014." as a mixture of true and false because Gore didn't himself make the claims, he was basing it on his incorrect reading of what scientists said, and because Gore was probably only talking about the ice going away in summer.

Can you imagine for one instant if a Republican had made such an amazingly wrong claim that Snopes would be doing everything possible to cover for them?

No; neither can I.