Here's another social networking service: Orkut which has been designed by one of Google's employees. I didn't know this, but apparently Google allows employees to spend up to 20% of their time on personal interest projects. That's pretty cool and is definitately going to foster some amazing spin offs. I think, perhaps, that we're going to look back on Google in a few decades and compare it very favourably with Xerox Parc. More at Search Engine Watch