this blog, and haven't had a chance to check it completely out. The basic premise seems sound, though.
And if you are wondering who Anthony Watts is, and why there seems to be a link to his website in every tweet you get from a denier - well, there's your answer!
I personally am going to tweet the meme on the left, together with a link to the settled science blog, to every denier on this list. (Well, except for Michele Bachmann. ;-)
I apologize in advance for how BORING my Twitter feed is about to become!
And hey - anyone want to join me?