Groupon is doing something, that might be described by the next big thing. The service has a crowd sourcing approach and uses the collective buying power of a group to sell coupons mostly within the lifestyle segment. Futhermore the service is using the networking approach by enabling the distribution of hot offers throughout social networks. Groupon is most succesfull and reaches monthly sales in the range of millions. Lately an investor invested a three digit million dollar amount in the company. At all research by Hitwise Intelligence shows exponential growth for group buying with other services already joining the trend.