Minor blogging note

After almost fifteen years of using that picture of the Beta Lyrae star system as an "avatar", I've decided to make a change.  The old image was significant to me, but for reasons not easily explainable to anyone else.  The new one is, at least, actually me, which the old one was not (sorry if anyone was misled, but no, I don't actually look like a pair of stars surrounded by a glowing-red spiral of fusing hydrogen).  It's an X-ray taken in 2009 after I suffered a concussion in a bicycle accident.  I think I was wearing some kind of neck brace, which is why it looks thick at the back.  I've never allowed any other pictures of myself to appear on the internet, but I figure this one won't be too much of a personal-security problem.