NYT on In-Game Advertising
The New York Times has a piece on in-game advertising, likely sparked by the installment of RL billboards in Anarchy Online. They discuss the ways in which ads are placed into games and the possible negative reactions from game players as a result of advertising in entertainment they've already purchased. From the article: "I don't want to pick up a sword and have it read Nike on the side..."
Obviously there are problems in some cases (what are you going to advertise in a world like World of Warcraft?) but thats a problem for another discussion.