Every Stack Exchange question is required to have at least one tag; tags are how we group, order, and find questions. But how do you find the right tags for your question?
When you start typing in the tags field we show you a simple list of existing tags that match what you typed so far, ordered by frequency.
Simple indeed. No explanation, just … activerecord (485).
It became increasingly clear to us that were doing a poor job of educating users about not just which tags to use on a question, but also when to use them. And I believe our old tag completer was a big reason why. …