Oh my my my my my!
Last week I posted about Visual Thesaurus. As a note, the VT folks send out a word-of-the-day email that I love. In the past week I've gotten emails on colleen, pernicious and insouciant, just to name a few.
But this is even better. From a link on the VT site, I found The Grammarphobia Blog.
I especially love this page of debunked grammar myths.