I guess just randoms worlds sourced online, there are just so many out there. I don't tend to stay in one world for that long. However I recognise the same stereotypes... the twin, the jerk who keeps telling us we're all losers, the chatty interesting one, the creepy stalker, the cool one, the quiet one, the one who thinks they know everything, the hackers, tweens, curious about s-x, the perverts, I guess characters like in real life but the beauty is you can judge from afar and don't have to deal with the consequences. I also enjoy picking my avatars, styling myself up in the virtual world because I could just never look like that in real life.