It seems like a lot of bloggers are retiring nowadays. Arguing with Signposts is sort-of retiring, in that he is going to be blogging in his own name elsewhere, and so will be retiring his anonymous blog.
Signposts has been blogging for more than 3 years, making him a Methuselah by blogosphere standards. He's one of those guys who never added me to his blogroll, but I kept him around anyway. Good luck in your new project, Signposts.