Compra3 is a Brazilian company. The founders are Bruno Medeiros (Economist) and the AndrÃ© Monteiro (Business administrator).
The Business model is a social network of products with a progressive cash back system. Users donâ€™t have to wait until a critical mass of buyers is reached before being able to make a purchase. They can immediately purchase an item with a specific discount, say 10%, and then receive cash back throughout the rest of the 30-day buying period as more users purchase in the same web retail, bringing the price down further.
The social networking features include customer profiles, the ability to view recently purchased products and recommended products and vote and comment on othersâ€™ recommendations, and integration with Twitter, Facebook and other social media sites. The more a user promotes a product theyâ€™ve bought through social networking, the more likely the price of that product is to drop.