Brian got me to sign up for this thing called Twitter, brought you by the talented developers of Odeo and other good stuff. You send short text messages from your phone or a web form, and then it updates your friends as well as the public timeline. It looks like the designers were playing a lot of Katamari when they created this.
People mostly seem to be using it to report their status “tired, hungover” or “at the office” but it seems like it would be especially effective for spontaneous social planning, ie: “Snagged a great table at Mill Town, looking for company.”
Anyway, it also has a badge so you can help your blog readers monitor your status (because I *know* you care). 😉