I'm a hater. It's who I am. But I'm trying to transition my hateration into something positive and that's by actually doing something with myself. There's no better way of feeling superior to someone (if that's what really gets you off) by demonstrating why you're superior. So by creating something beautiful, witty, and entertaining, or getting in better shape than someone, or just doing anything that's difficult that they can't do, that's turning hating into an art.
But an amateur hater is content to just sit on the sidelines and make criticisms without doing anything extraordinary in their own lives. Obviously there are exceptions to this rule, but if some dude working a 9-5 job he hates is ragging on an actress on a super popular TV show for being "fat" then it's safe to say that the dude is an amateur hater.
Which is exactly what happened to Alanna Masterson.