How often should I blog?

Aristotle Pagaltzis wrote about keeping the signal to noise ratio high in your weblog, and there is no need to write frequently for the sake of keeping the readers, as most of them will keep up with the news feeds anyway. I love the analogy of busy wait and sleep. And there is no point sending too many false interrupts, as your readers might learn to mask off the int's -- or even unsubscribe. Maybe I can use that as excuse for not writing more here, on Bargain Blog and on FuCoder.