[b]#1:[/b] Characters who have no motivation to do anything. As a GM this frustrates me, as I have a lot of other stuff on my plate and generally have other players to assist. If your character has no motivation to see the plot through, then your character doesn't belong there and should be a background NPC. Simple enough, no?

[b]#2:[/b] Twits who seemingly can't tell the difference between a character and the person who is playing that character. Why, yes, that character of mine happens to be a deluded zealot. No, I am not a deluded zealot myself. Yes, that character is an attractive female. No, I assure you, I am neither attractive nor female in real life.

[b]#3:[/b] A player who creates a character for a role play of mine, then refuses to accept assistance in the creation process. Generally, my worlds are very dense and complex, and contain a lot of information to explore that I simply can't squeeze in a single plot introduction without murdering the pacing like a sacrificial lamb. So when I'm offering you advice and criticism, it's not necessarily because I think your character is bad, it's because I'm trying to help you fit that character into the world. Really. I'm trying to [b]help you[/b]. If you can't take that, how can I trust that you will take any of the mature concepts presented in the story in a mature manner. Such as a person you like getting killed off, or a love interest you want turning you down?

[b]#4:[/b] Role players who walk into a GM's world and start rewriting and adding significant events without warning or asking, and expecting the GM to comply. Something like adding a small village to a large fantasy world is fine, but if you're going to start going on about some massive civil war, the least you could do is get it verified by the GM first so the world isn't plagued by crippling plot holes. This is made worse if this pops up right in the middle of an otherwise ordinary conversation, as it likely derails the entire conversation unless the GM thinks fast and attempts to come up with enough hand wave bullshit to fill the plot holes as they pop up.

[b]#5:[/b] "Mature content" does not mean pornography. When my phone at my work place got temporarily banned from the work net because connecting to the 1x1 section triggered a ban filter based on [b]pornography[/b] about a month or two ago, that's a sincere problem. One that will prevent me from taking the 1x1 seriously for a long time. Which is a shame because it can be a lot of fun with the right people.