The Hamburg-based startup, Pay with a Tweet, brings online marketing to a new level: not using advertisement but word of mouth to gain new customers. Providing simple software solutions, Pay with a Tweet makes use of the diverse target groups social media has to offer.

What makes people buy things? What makes them choose a certain brand? Marketing experts have been brooding over this not only in modern times, but since the beginning of trade when barkers shouted out incentives to customers passing by. But advertising alone is not what gains loyal customers: people are more likely to buy when someone else recommends a product or company. Word of mouth is important for business and while this often happens spontaneously, many companies today use strategies – so called referral marketing – to influence this process.