Not so much a fallacy per se as a failure to read.
Disable the write lock and remember the answers to yesterday's questions asked or fallacies corrected. (DR)
Some people pretend to be interested, but stridently refuse to read posts or explanatory links. ("I refuse to read this e-zine, that blog, or any of your pages!") Then they repeat the same errors and misunderstandings. It can be aggravating. I usually call them on their intellectual dishonesty, and then block them if they continue to ignore answers. [HB]