Open source has been with us for ages, but the concept of an Open Company is brand new. One small software firm, e-text editor, is converting itself into an Open Company in what looks like a very interesting experiment. The idea is basically to allow people to get compensate fairly for work they are passionate about with any of the politics, systems , etc that come with typical corporate entities.
It's a brave and bold experiment that clearly has some ways to go before wide scale adoption, but in a age where the basic fundamentals of a corporation are being challenged from a number of angles, this looks like a worthy effort.