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.
Since September, 16 major drug companies have inked deals with the Trump administration to lower prices....
