If you have a Doomsday Machine - one that will destroy the whole world if anybody messes with you - it would be insane not to tell anybody about its existence. The whole point of the Doomsday Machine is lost if you keep it a secret!
Same for blogs. Why bother having a blog if you don't tell anybody about it?
And so I was surprised to find, in Seamus's post the other day, that the New Zealand Association of Economists has a blog. It isn't updated very often, but it's still there. And I'd thought that Offsetting, AntiDismal, and TVHE were the only non-defunct NZ econ blogs with an academic focus.
Here's Bill Kaye-Blake from back in March giving reasons why folks might blog. He suggests signalling. As signals need recipients, hit his RSS feed.