It's a killer feature.
Discussion
nostr:npub1ye5ptcxfyyxl5vjvdjar2ua3f0hynkjzpx552mu5snj3qmx5pzjscpknpr feature request - currently not possible to follow hashtags, other clients do this, the hashtag feed on #nostrudel is stellar tho!
also, please don't do like what some clients do which is put hashtags in "p" tags, this is silly