I find it difficult to add the same tag to a message as I did some time ago. I often look up in my "Top Tags" page.
In a discussion in a group of the community (example: https://decibel.ni.com/content/thread/15792) this is much easier. Existing tags of any user are proposed while typing. So it is much easier to reuse existing tags. And tag clouds of the NI forum would show clearer results.
Here's a link to meta discussions on the design and implementation of the gold-standard tagging enging -- and agreed that AJAXy typeahead is one of the more important features to help grow the tagging ecosystem for LabVIEW. Tagging makes the internet a smaller place 🙂