I like Twitter, the so-called "micro-blogging" platform. Twitter lets you send short, text message updates to anyone subscribing to your Twitter feed. Since Twitter is a group experience, it really comes alive as you engage with others -- it's truly a pure form of social networking. If you'd like more information, ZDNet has posts on the subject.
Having said all that, I invite you to subscribe to my Twitter feed! Join the feed and we'll Twitter IT failures, gadgets, stocks, music, cooking -- you name the subject and we'll Twitter it together.
How to receive Twitter feeds:
Twitter provides an API, making it easy for independent software developers to create Twitter clients. In fact, this API is one significant reason for Twitter's growing success: Twitter clients are rapidly becoming ubiquitous and available on a broad variety of platforms. Personally, I use Snitter, which runs on both Windows and Macintosh.
So, Twitter up and Twitteree, come Twitter together with me!