On the other side, I have lots hidden, mostly due to the unsightly profile pics that other posters have mentioned.
On this side, a handful of people.
One or two totally clueless, unaware bozos who do nothing but troll maliciously, and the various incarnations of Team Suck Poppet that manifested in the past.
One or two whose language is just so ugly-not cursing, just literally so ugly that when I read their posts aloud in my head it gives me a headache-are on hide.
I used to have wicked on hide, because he was always trolling ladies about being fake and his posts were just incoherent. But at some point I took him off hide and realized that somewhere along the way he had picked up some clever wit. So I don't hide him anymore. Don't always read what he writes, but I don't hide him, lol. He makes me giggle sometimes.