Just FYI. Tags have been fixed (we had an unexpected bug just before launching on May 24).
This means that we can finally start tagging topics consistently. Also that we can take requests and satisfy them quickly.
Also, you may have noticed that we have language tags now. Authors of new posts must define the language they are using in their first post. From that point, new language tags will be added automatically when people post natively in new languages on that topic. This allows users to search for i.e. posts with comments written in Spanish.
If you want to see this feature in extreme action, check This is a test of language tags. New languages are welcome!
Right now we have a backlog of already created topics that are missing these language tags, and they need to be added manually. We are sorry for this incompleteness and we will work on it. If you are impatient, you too can help adding tags.