What projects are people working on with Linux?
I'm looking for a forum or a place online where people are discussing and showing off the cool stuff they are doing with Linux, programming and general computer science projects. With topics such as custom super computers, clustering, home and car automation, data mining setups, home server closets, etc.
For example my most recent project was setting up a remote backup service for my clients. I built a custom air cooled rack for holding cheap, easily replaceable, high storage capacity desktops with replication over the network. So if a computer dies I can just stick in a new one.