This, The Denialism Blog, looks like it will be a very valuable resource. The blog is dedicated to talking about sound practices of reasoning and argument, in large part by examining unsound practices. The blog looks in particular at the kind of cranks who deny various claims that are well supported by evidence. People who deny the holocaust, the 4.5 billion year age of the earth, global climate change, etc. If we of the reasoning folks are going to win these arguments we need to be well prepared, both to make our own arguments more sound and to recognize what is wrong with our opponents arguments and to be able to communicate those failings clearly. The Denialism Blog will help with that tremendously.