Right now, thousands of gamers are doing menial jobs in their virtual worlds. And they're earning a living.
The process of contracting out a game's drudge work for real money is called "gold farming." This happens in the games that involve thousands of characters at a time, interacting in an online universe that players inhabit over the course of months or even years. Some tasks, such as gathering up virtual gold pieces, swords, and magic wands, can be done by any novice player who puts in the time. In other cases, you can hire a master player to surmount a game's challenges and raise your character to a higher skill level.