We lost a good soldier (and friend) to an increasingly impressive startup:

"friday was my last day at yahoo…while I’m sad to leave, I’m incredibly excited about where I’m headed…i’m joining FeedBurner as vp business development, strategic partnerships"

He'll bring some really sharp and aggressive strategic thinking to the outfit along with the ultimate address book.  This move is part of Feedburner's global expansion plans:

"FeedBurner still calls the very windy city of Chicago "home" along with resellers in both Europe and Asia. The addition of [the San Francisco] office will help us better serve our strategic partners on the West Coast."

Sorry to see you go, Don.  Good luck.