Guide to Micro-blogging

Guide to Micro-blogging: “Micro-blogging allows you to write brief text updates about your life on the go, and send them to friends and interested observers via text messaging, instant messaging, email or the web.”
Microblogging is not quite the right term (though it has stuck). Tools like Twitter, Jaiku and others are more about persistent presence - keeping that small group of people who care about us informed about the sandwich we just ate.