I just added a Twitter widget to my blog. Twitter is a free service that lets you create a feed to which your friends can subscribe, or that you can add to a blog. The feed consists of messages that you send from your cell phone, or via a Twitter web page. Anyone who is subscribed to your Twitter will get messages any time you make a posting. So, it's a way for you to let you friends know where you're going, what you're doing, or how you're feeling at any point in the day. Perhaps not very practical, but kind of fun.