Roleplaying servers mean a lot. It says that the company producing the game has an ear to the ground and understand that a select number of their population would like to do improvisational acting in their virtual world. That's what it's for, right? You make gamers able to sit in seats, drink booze, and do dances because they like interacting with one another, and sometimes they like to interact with one another on the same level that the game interacts with them. A seamless divide between players and NPCs.