Nice article :)
My suggestion would be, if your open source project has > 1 people working on it or using it, it's time to start thinking about a code of conduct. It's much easier to lay down some ground rules when you've got five users rather than five thousand, and it sets the tone for the community going forward.
GitHub makes this really easy now!
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.