Hmm as i understand it based on the posts in this thread, the problem is that people who prefer casual rp with talk about RL etc. and more serious rp players can`t really play together. For me rp is staying in character, don`t talk ooc and that means don`t talk about rl, don`t use ooc knowledge, your character only knows what he found out himself, if you know that that guy plans to kill you it doesn`t mean your character knows and btw. for me it`s an essantial part to describe the actions of your character(though when the actions include another character you can only say what you try to do and not just say * i chop his head off and bury him*) purely dialog driven rp would be to limiting though the dialog is important.
As you see i wouldn`t be able to play together with someone like Glaistig if i tried to rp since what we want from rp is different. If i tried to rp and someone talked about RL my character would probably think that the guy is a bit crazy.
To summarize it the concept of rp is to different than you can`t really play together. But i don`t know what to do, to solve that problem beside the two groups ignoring each other.
PS: Just to make it clear I don`t rp her, never tried never will. I just fight a bit and search for weaknesses in the system. I don`t really have a reason to talk about this topic but i have time^^