The environment is more casual, and you can return back to the game without feeling to disconnected from the game.
Again I haven't found a game that I would play on frequent basis but I could see myself going back to a lot of these games just to see the changes in the environment. Although I'm not a fan of griefing, I would probably go back to the games to see the changes in the style of griefing as more restrictions are applied to many of these games. Because I have found that in any multiplayer game you will always have griefing. Its just what comes with environment of gaming with many people. This works similarly even in non-electronic games, you'll have teaming up and cheating that is either incorporated in the game (like B.S.) or discouraged (like in monopoly). But in the end there is no control over griefing and it is inevitable to happen.