I'd like to suggest a different approach than what I've seen on most sites: rather than just having a list of topics I think it would be wise to first define the core topic which this site is about. I think it's important to state that except in the rarest of questions "open source", "free" and "libre" are considered synonymous on this site. I have used the current most highly voted site name suggestion, so if you don't like "Free & Open" please go vote! So here's my go at a first draft:
Free & Open (or alt. site name) is a question & answer site about a group of related movements which encourage people to give up some of the rights given to them by copyright law, by using licenses which give others the freedom to use and transform their creative works, and which optionally (by using copyleft/share-alike licenses) ensure that these works will always be made available with the same rights. This site is not limited to software, but also covers art, literature, hardware, databases and more.
These movements have been spearheaded by a group of organisations: FSF, OSI, Creative Commons, Free Culture. These organisations prefer a variety of different terms (free, open source, libre) and sometimes define them with slight differences. But on this site these terms should in general be considered to be synonymous, except for questions which ask directly about their differences.
You've come to the right place if you have questions about:
- the history and philosophies of the FSF, OSI, CC etc
- understanding, applying, and complying with Free & Open licenses
- how communities collaborate together to produce, distribute, market and sometime monetize these projects
But there are some questions which should not be asked here:
- if you want to know how to use some software, or how its code works
- if you would like recommendations for Free/Open software or media
These questions may be on-topic on some of the other Stack Exchange sites, but make sure you check their specific on-topic guidelines too.