Plurk.com

A really snazzy site that allows you to showcase the events that make up your life, and follow the events of the people that matter to you, in deliciously digestible short messages called plurks.

How does Plurk work?

It's easy. First, sign up. It takes 10 seconds. Then, just post new plurks which tell us what you're doing, or how you feel, or what you're thinking or anything else for that matter and it'll appear on your timeline. You can tell us on the site, through instant messaging (stuff like MSN or AIM) or by text messaging us an update. Be sure to invite all your friends and see what they are up to throughout the day, it will make Plurk that much more fun for you.

link--http://www.plurk.com