Twitter??

I just joined a "keep in contact" type of site started by the odeo.com people. Ostensibly, anyone I call my friend can text my phone via their phone or the web and I can receive it via web or phone. I can see how it might be very useful to people who need to keep in constant contact, or for someone trying to coordinate the actions of several people at once, like an operator for a large phone system or messaging system. I'm sure there are other applications. I'll see how it works out for me. Coincidentally, I learned about a "service" called treasure trooper. you can make money by filling out surveys and participating in market research.