Here's how it's happening:
Facebook users play a social game, like "FarmVille" or "Friends For Sale." They get addicted to it. Eager to accelerate their progress inside the game, the gamers buy "virtual goods" such as a machine gun for "Mafia Wars." But these gamers don't buy these virtual goods with real money. They use virtual currency.
New guidelines for managing cholesterol call for more aggressive prevention and earlier treatment, including a recommendation...
