LocalBonus, the New York-based startup, is announcing today that it is expanding to 5 cities with a network of over 800 merchants. The service allows consumers to use their existing credit or debit card as their loyalty card at local businesses. LocalBonus members automatically earn rewards points by shopping at LocalBonus merchants, and save up those points to redeem for up to 10% cash back rewards. The company’s beta test in New York was so successful that they are now expanding to 4 new cities today – Seattle....