Ah, I misunderstood.
I was thinking the purpose was to gather tags to drop on posts. Like, for people to discover you.
We could use a small subset of recomended tags. #asknostr and #grownostr are the best I've used.
asknostr to ask for tags to follow relavant to interests, and grownostr to find tags on posts I like.
Of course, there are community solutions aside from tags, like channels, but I haven't found as much activity there.