a plethora of issues really.
first of all: very annoying and unnecessarily rude freaking people. i don't know how else to describe it. i was surrounded with a lot of crappy "mutuals". trolls. as well as people with extremely weird and questionable stances.
accounts that promoted casinos and actual drugs including xanax and probably self-induced euthanasia ones if i remember correctly. very weird and dangerous medication.
gore, a lot of gore, that took forever for moderation to take out for some reason. some people blaming all of us for it, as in: "well the gore issue is kinda your fault because all you do is whine about it. myspace also had an issue with gore therefore you just have to suck it up and be okay with it" kind of dogwhistle. an did absolutely nothing to actually at least get better moderation.
people actually do not interact with you, at all, then proceed to complain that no one talks to them. unless you're scene or are in an extremely common fandom - no one bothers to talk to you.
that's pretty much all i can think of.. i know it sounds kind of rash in some parts but please take it with a grain of salt.