Advogato.org was an early community site and aggregator for Open Source advocates. It was build around a Web Application (mod_virgule) which supports trust metrics. That way the community members can certify each other. This was used as a spam prevention and identity assertion measure.
This technology was well ahead of its time. Now Raph Levien announced, that he will shut down Advogato. He thinks that there are enough alternatives, and he does not have the time to add features to the software or even fight against some recent DOS attacks.
The site will be missed, but it is most likely really time to move on. I was myself a master on advogato, but I did not write a lot diary entries there: eckes. I will continue to blog on my private site eckes.org and on my business and technology related blog: itblog.eckenfels.net