Tired of maintaining an entire profile page where you need to answer messages, comments, write about everything about you, learn HTML to make it look decent, add applications to enhance it and keep it up to date?

Love to update your status?

Twitter. A simple social networking website with little effort required.
From Twitter's home page:

Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?

As soon as you sign in, you are shown a page with all your contacts' recent updates. Your profile page is a page that shows all your status updates, as well as just a photo and a one line description about you. You can post to Twitter through many external websites and through SMS. Simply set up your phone for Twitter and you can send and receive your Twitter updates.

Twitter.com
It's simple.

Your bad promoting blogger,
Miss Alexiness.