“A system to share your efforts with others”
It would be nice to have a place where people can let each other know about their efforts and progress concerning Ubuntu (read on I'm not suggesting a newsgroup).
In this place you can let others know about an project your working on, an article you wrote, a deal with a company, a new driver, information you found and is worth knowing about, etc.
Adding the possibility to give kudos and discuss efforts, would greatly benefit to the motivation of our community to contribute to Ubuntu. Also it can be motivating for others to read about their efforts.