One thing I hate about WoW are the people who invite you to their shitty guilds at random. They usually have a copy/paste message and instantly send a guild invite that plays this loud, annoying noise.
This particular guild was one of the most annoying for a while, spamming my character invites up to three times within a couple hours, but they stopped for a month or two…Until just now, when I got one. Back when I made a new, level 1 warrior, they spammed me an invite the second I logged in for the first time.
Good guilds have people asking to join, bad guilds have to ask people to join via spam.