Marina, Daniel, Muslim and I represented GNOME at the Google Summer of Code Mentor Summit.
As a nice coincidence, my colleagues Sumana and Rob also went their representing the Wikimedia Foundation.
After attending a session about project management I realized that there might be further interest to discuss bug management / issue tracking so I set up a session for Sunday that about 15 people attended in order to discuss problems and practices. For those with an account, the log is available.
I also attended sessions on Continuous Integration, Community Metrics and other topics.
Big thanks to Google for sponsoring and arranging a welcoming conference with a wide range and variety of topics.