Deb Amlen (author of It’s Not PMS: It’s You) writes and presides over Wordplay, the official New York Times Puzzle blog
Diary of a Crossword Fiend (Amy Reynaldo) Amy (and others) blog a lineup of crosswords, including Crossword Nation on Tuesdays!
Crossword Blogs and the Other-Sphere
Jim’s xwordinfo.com site revolutionized the way solvers and constructors quantify New York Times puzzles
Wordplay: The official crossword blog of The New York Times chose Jim as its inaugural blogger
www.cruciverb.com Pure gold.
Word Salad (The Nation) Kosman and Picciotto on their Nation puzzle, cryptic crosswords, wordplay and puzzles in general