A couple of weeks ago I decided to take the plunge and join up at Twitter.  If you're not familiar with it, Twitter is often referred to as a "microblogging" service.  Basically, you can post anything you want to it, as long your post consists of all text and is less than or equal to 140 characters long.  So you can't post images or videos, but you can post links to those files if you want.

So how does this relate to SharePoint?  Well, I joined Twitter at a pretty opportune time, because there really has been a large up swell in SharePoint-oriented professionals who have started "tweeting" (that's what it's called when you post something to Twitter, don't ask me ) in general and about SharePoint specifically.  I've been really impressed by the discussions I've been able to catch by being on Twitter, not to mention the ones I've gotten to be a part of.

If you are on Twitter and want to follow me, my page is posted below.  I'll also post a couple of other good links for finding SharePoint folks who are on Twitter, I highly recommend following anyone who catches your eye.  And keep in mind that this is just skimming the surface of what you can do with Twitter, there's all sorts of search engines, localizers, tag clouds, meme trackers, etc also springing up around Twitter on a near-constant basis.

http://Twitter.com/ferringer
http://twitter.com/sptweeters
http://stevepietrek.com/twitter/

Enjoy!

P.S. - I've found that Twitter is much more enjoyable via a rich desktop client.  I've used Witty and really liked it, but I'm currently using Twhirl (it has way more features and functions than Witty currently does).