open source project management

During OpenStack Summit Austin, I had the chance to talk to some people about my experience on running open source projects. It turns out that after hanging out in communities and contributing to many projects for years, I may be able to provide some hindsight and an external eye to many of those who are new to it. There are plenty of resources explaining how to run an open source project out there. Today, I would like to take a different angle and emphasize what you should not socially do in your projects. This list comes from various open source projects I encountered these past years. I'm going to go through some of the bad practices I have spotted, in a random order, illustrated by some concrete examples...