Those who only do hauls/try on hauls purely for the purpose of a video and just say "Oh I'll just send it back." To me, I really don't understand why, if you're buying in a high street shop you wouldn't try it on first? We don't need a video to show that it doesn't fit. It'd probably do a lot better if you actually liked the clothes, they fit, you tried them on first and it'd turn into a more positive video.
Clothes that YouTubers think are so amazing, but they look awful (Roxxsaurus latest one with ASOS springs to mind).
Paying people to PhotoShop me hotter videos.