Years ago, I regularly read the Red Rock Eater News Service, a mailing list run by Phil Agre, then a professor at UCLA. He was smart and opinionated, and his enthusiasm for cheap-but-good fineline pens helped me during my days as a full-time editor.
I found out today that he has been missing since sometime in late 2008 or early 2009, which is particularly worrisome because of his bipolar disorder. I did not know him at all, but his disappearance is strange, especially because it hadn't been at all publicized until three months ago. It seems he had been behaving erratically before his disappearance.
I've known a few people who have vanished in a similar fashion, and those cases did not end well. I hope things are different in Agre's case.