There are as many strategies for winning at gambling as there are losing gamblers in Las Vegas, Atlantic City, and Mississippi combined. Everyone has a system, a book, or a "winning" strategy, and most are more than willing to share hints with you - for a price. But gambling cities continue to rake in astounding annual revenues; on average, Vegas alone rakes in more than $9 billion per year from its 400 casinos. With all these people losing, how can a strategy help you?