@LMAO is flooding the site with random communities because they’re salty about being banned for claiming too many community names. They claim they’re trying to “fuck your entire site up” but I imagine it’s a relatively quick fix to delete all the communities they’re creating, LMAO.
Courting a user base of insufferable, unfunny, terminally online idiots gets you a user base of insufferable, unfunny, terminally online idiots. If you will recall Reddit went through the same influx of shit with the digg exodus and even more so as smartphones got wider adoption.