[amsha]

The structure of your website's data is less important than its moderation process. High quality online communities tend to have strong, well-defined moderation policies – Wikipedia and Stack Overflow are good examples, as are HN and certain subreddits (eg AskHistorians).

Regardless of the technology behind a website, online communities without strong moderation tend to die over time as low quality content crowds out everything else.

[tduberne]

Thank you for the remark. That is indeed also what I am looking at, or more precisely the interaction between structure and moderation policy. Stackoverflow is a very good example of how they interact. At such an early stage, I am mostly trying to identify structures on which policies can be built, as policies are much easier to change.