If you call yourself purple turnip rider, someone may "report" you for a fake name if you are publicly antagonistic in a group as a passive agressive way to bother you. *then* you have to provide proof. One of my friends recently got reported for their fake name because they have a) an obviously fake name and b) very politically voiciferous about feminism, veganism and socialism. So a list they were ranting on pissed off someone and they reported their fake name.
If your name is William Boddleton and you choose the name Bill Featherjob as an alias, seriously, no one is going to know that it's fake. So no one will report you for it.
I turned off all my games notifications so I never get any. I stopped notifications from anyone I find annoying. No one that I don't want can see my posts from my alias account.
I hate getting feeds that post insipid meme after insipid "inspiring" meme, so I just click on "never get notified from this person again"
I have a fabulous core group of people I love to talk to and love it. I just had five people help me edit my homework lol. It's great. None of my family are on it, no one from anything to do with business and only my two closest classmates/lab partners that I trust ( I can see their shizzle too).
I personally find facebook great for keeping in touch with my friends who are smeared across the planet. Without it my social life would be crippled and Id miss people horribly.
So, I personally love it.