Ian Bicking pointed to O’Reilly Connection, which is actually a pretty interesting looking site. It’s a combination of social networking software and a jobs board for software developers and people who want to hire them.
Given how many jobs are found via people you know, this is a logical step, and the implementation looks good. Of course, it looks like it’s just getting started (192 people with the “python” tag, 320 with the “java” tag). Something like this needs to hit critical mass before it becomes viable.