It's in Morse code, and if you click on it, you'll get a page of search results about Samuel F.B. Morse. He invented Morse code, and today was his birthday. In honor of this, I've changed the message in my "code" icon, used on this post.
EDIT: Oops, I wasn't careful enough the first time around and the code was getting munged at the linebreaks. Try it now!