i'm amrita cheema. coming up in the show -- the click business -- buying online friends from bangladesh. underage marriage in mozambique-- robbing girls of their childhood and future. and, old and lonely? senior citizens in japan find ways to cope. most of us can't imagine a world without social media anymore. it has become a part of our lives. how big a part, of course, varies. facebook, twitter, and similar sites have changed the way we communicate, but they are also influencing the way business is done. companies big and small are using these platforms to gain access to consumers. the more friends and likes they get for their products, the more customers they can expect. the hunt for more fans to boost a company's online image has led to the creation of what are known as click farms. we visited one site in bangladesh to see how it works. >> likes are the new currency on the internet. dhaka, the capital of bangladesh. it's also the global capital of click farms. the country is one of the poorest in th