I guess I'm guilty but I like details especially for campground info or routes. :) I do try to make paragraphs to separate thoughts.
I dislike short posters with statements like: "do a search" or "I don't know or I haven't been there but hope it works out". Those kinds of posts just take up space and are senseless.
I also dislike seeing huge pictures - smaller ones will do just fine - or folks replying and reposting the huge pictures and then others reposting the huge picture, etc.
Some folks also reply with the same post included - especially the 2nd reply quoting the 1st reply.
Also posters that only read the 1st post and then supply an answer when the poster has already received his answer in post #2. Or posters that bring up old, old posts, especially on travel, when the OP has probably gone and returned months ago. :)
Whew...I think I kept that kinda short!