What are the signs of a healthy online community?

A community is not defined only by its member count or the number of daily posts. Newcomers feeling welcome, disagreement handled respectfully, questions receiving thoughtful replies and moderation decisions being understandable all matter.

What three qualities make you want to remain part of a community? What should Ndiyon encourage, and which numerical metrics should we avoid treating as the whole story? Share ideas for a community people are glad to contribute to.