When browsing a friend's read books, 5 star-books, tbr etc., I'd love to see the public tags they've used for those books.

Maybe a friend read an interesting book on "duck grooming in 18th century Europe", and I want more recommendations on that topic from that person. If they used a tag, it would be easy for me to see the other books they've read or want to read.
Or maybe a friend has created a tag for books they want to buy and I can surprise them with one of those as a gift.