I've been doing daily mp3s at @djgoatboy on Twitter for about a year and a half now. It's worked well, but I'm changing it up. I'm going to continue making music every day, but only upload it once a week. This will allow me to either post the best mp3 of the week, or post an mp3 I've been working on all week. The continuous effort factor stays the same, but the standard of quality rises.
More info in today's mp3