How does Farmville make money?

How does Farmville make money? Plain and simple, they make most of their money from advertising. With the amount of daily and monthly active users that visit their games, they can make substantial profit from this. Since they also have lots of games, they have free advertising for them within each game. How did they get you? Probably while you were playing a competitors game. If not, perhaps you saw the ad while playing one of their other Facebook games. They take most of their advertising money, or perhaps investor capital, and spend it on advertising in competitors games to gather new users. In the end, they make much more money. Very interesting, really.