I signed up for LinkedIn recently, it’s quite a spiffy webservice hiding behind a wall of registration.
I like the design of the service, although it’s so tightly designed that I sometimes feel like I’m not supposed to be using it, it’s hardly “sandboxey” like other social networking site.
LinkedIn claims to have 5 million users but what’s weird is that on Alexa, LinkedIn has barely any reach, especially compared to sites like Friendster.