This talk comes recommended the book "Swarmwise" by Rick Falkvinge... I found this "group therapy session" to be entertaining. The secret is; it applies to all communities (not just open source projects). Their experience comes from an open source project hence the title.
Swarmwise recommends this for all leaders and decisionmakers. I think this can help everyone technical or not. We can keep this in mind when leaving comments to provide for a better experience.
"How Open Source Projects Survive Poisonous People"
I think it's about politics, not technology.