Just started playing with Jaiku, the older brother of Twitter (which I love). Jaiku’s goal is to “bring people together” via presence updates through the web or mobile phone (sound familiar Twitters?). Jaiku has a bit more customization and a more polished look then Twitter, but both are going through their growing pains (e.g. server outages and slowness). All-in-all i like it and even put my Jaiku in the “About me” section. It is worth taking a look at even if you don’t want to use it…I got a feeling there is going to be some great innovation in then space.