Mark Weeks does an excellent job at the About.com chess pages, and also has a fine blog in Chess for All Ages, "My place to say things about chess that I can't say in the other places where I say things about chess."
Also added Patrick's Chess for Blood, a personal chess blog packed with interesting and instructive material.
Thanks, gentlemen, for adding to the conversation.
ADDENDUM: Dennis Monokroussos is again active at The Chess Mind. Hurrah!