A new and innovative way to purchase products is Pay With a Tweet. The German-American Innovative Thunder team created the revolutionary payment system. They acknowledge that today, buzz about your product is worth more than money spent on advertising.
This is how it works: Products are paid for by word of mouth on Twitter. When you "purchase" a product you are given a URL to place in your tweets. Instead of paying with currency, you are paying with social advertising. Pay With a Tweet is currently testing the idea on Innovative Thunder's book “Oh My God What Happened and What Should I Do?”