CodeCon
A great conference on P2P is going organized in San Francisco in February. It’s held @ jwz’s place - the DNA Lounge.
The conference is centered about several interesting topics, and I’d really like to attend there. Check out its website
CDC is planning to release some code and other technologies related to file sharing are going to be present. Too bad there isn’t anything related to ecommerce such as an implementation of auction protocols on P2P networks.