Zynga's Marketing Firm Vandalizes San Francisco, Gets Stuck With Cleaning Bill

Zynga's marketing firm, Davis Advertising, just got slapped with a massive cleaning bill (and fine) after a guerrilla marketing campaign went awry. Davis glued fake $25,000 dollar bills (or, tacky advertising fliers) to San Francsico city streets to plug Zynga's latest game, "Mafia Wars: Las Vegas."