You can now use the equivalent of hashtags, which I just call tags. You'll notice a Tag button when composing messages. Just use that on some text, and it'll insert code that makes it work like a hashtag. Don't remove the underscores, or it won't work.
This is pretty exciting for me, especially as you can add lots of tags at once, and the feature shouldn't slow the site down.
I consider the idea of how to do it miraculous.
Location: SW Idaho, USA
USDA hardiness zone: 6
Elevation: 2,260 feet Profile post