Sometimes, as a game designer, you tend to forget how well versed you are in your medium. You tend to think that all people are able to plunge into a virtual world and stroll around. You could not be more wrong.
While working on an assignement for our current module on collaborative virtual worlds, I think I started to understand what bugs me in both MMORPGs like World of Warcraft and sandbox games like Second Life. There are (as for now) two points: