I know the blog module supports RSS, but in my estimation, most users aren't RSS-aware yet. I'm wondering if there would be a way do e-mail notifications, sort of the way MySpace does, when new blogs are published. It would allow users to "subscribe" to the blog by submitting their e-mail address.
I know it will probably require some custom coding, but any idea where to start? Maybe this is another widget that could be added to the blog module.