More and more I notice a tiny nitpick of an annoyance in the fediverse. People who have their real name (or something that can be mistaken for it) as a handle, so if you mention them it's just @john and I have to hover or guess which john that might be. (If you follow people more than hashtags it's usually the same people being mentioned by people, but there are of course more collisions than with nicknames). OK, Twitter handles also weren't nicknames in all cases, but at least unique.