My friend Lindy told me to get a Twitter yesterday, and now I love the place.
Twitter / ryessica
A Twitter is basically a sort-of away from the computer blog, were you update through short frequent text messages throughout the day. You can get updates on your phone from other people you follow (think LJ friends), and you can reply to them. It's all really fantastic. I'd recommend it if you have unlimited texting or internet access on your phone. Even if you don't have it, you can turn off getting replies and updates on your phone and only use it to text in your updates.
Twitter: What are you doing?