Is it a blog if you only post once a week?

The Becker-Posner blog has finally checked in, with a post from Judge Posner. He begins with an introductory statement about what blogs are and then: "Initially we will be posting just once a week, on Mondays."

Is it a blog if you only post once a week? Maybe the answer is if you're Nobel-prize-winning economist and a federal circuit judge it is. Posner notes:

The rules of judicial ethics preclude Posner from commenting publicly on pending or impending litigation or participating in politics, as by endorsing candidates.

What an impediment to blogging it is to be a federal judge!

Anyway, welcome to the biggest new bloggers in the blogosphere.

UPDATE: Conglomerate answers my "Is it a blog?" question, but not really all that differently from the way I answered it. I don't care all that much about policing the meaning of the word, but I do think there is a sort of pseudoblogging, especially by MSM, that is really just column-writing, relabeled. Here's an example of a Madison newspaper that has a button to hit for its "blogs," and all you get is a collection of weekly columns. Those are not blogs!