Why must bloggers keep us apprised on days when they have nothing to say?

Good question. I see a lot of "Light posting today" or such posts and I guess the point is to be considerate to regular readers, but it's never something I would think to do. I guess maybe if I had more than 20 or so visitors a day it might be more important, but still, I think if I'm too busy to post, then I'm probably also too busy to tell you why I'm too busy to post, and if I just have nothing interesting to say, then you're all smart enough to figure that out when I don't say anything.