Oh man, those stories sound terrible, but, lol, hilarious... I didn't even know you could RP on Facebook. But... hahaha... Some times, it's so hard to understand how these things happen... lolol...
As for my bad-GM experience...
I was in an "advanced" game (or its equivalent) and the GM was one of those self-serving, self-involved loons. I had joined the game at the request of a friend (someone I've always wanted to RP with, but rarely got the chance to) and... terrible, terrible experience.
First, the GM would always randomly allow her character to earn spontaneous bursts of powers that made no sense and then cut down on all the other characters. We had split missions (missions divided into two teams) and... the team she was involved with, she always shone as the brightest motherfucking star. And the team she wasn't, she was always sure to knock us around with the NPC bad guys--drilling into our minds that we were not NEARLY as awesome as her character. Of course, she kept this all very, very subtle.
She gave her character glory and fame (via near-deaths, self-sacrifice, etc), but refused to let the other team dictate the course of their mission (she always maintained this rigid--you can't do this because it doesn't work like that and even though I'm doing it, I'm the GM and I'm working towards a storyline). It was such bullshit that, halfway through the game, I had given up and, instead of being productive, I spent all my time ripping on her character (and the other people's characters) via my character's post. Everyone else took it as good humor (writing it off as my character being the bitch that he is). And, to be honest, it was just a small, funny piece in an otherwise too-dramatic story. My character filled in the much-needed "comedic" role. The GM on the other hand... personally asked me if I genuinely believed the posts I was making and the opinions I held (namely that I thought her character was overly dramatic, idiotic, bland, and obvious, etc).
She was so butt hurt that I don't even... It was ridiculous.
.... I don't know how self-centered a person can be to take everything so... uh, personally. Like, wow, you had to really, really not see the big picture to think that every post is a post directed/targeted at you... Ridiculous. And, me being me, I just said: No. I don't connect to my characters like that. I write as I write for all my characters: Through the eyes and opinions of the character.
In any case, the RP turned into a huge shit-fest. Posts were a chore to read (even though they were all decently written) and handling the GM's drama-lama-life was.... well, draining.
And as for her character... omg, that RP. Almost all of the characters were hot, sexy, and suave. They were the most attractive, most irresistible piece of ass to have ever walked the living realm. It was seriously the hardest RP to understand. And the GM's character was, by far, the worst. Not only did she rip her design off of one of my characters (the code was markedly similar), but she did a shit-quality rip. If you're going to copy me, at least do it right... Like, her character... I don't. Omg, I can't even, LOL.