Pinterest is a very large social networking site which has now opened his site for everybody to site up, instead of it been invite only. Pinterest became the fastest growing site ever which passed 10 million users within the first 9 months. The company has not yet disclosed a commercial plan but has tried many money raising techniques. They have tried a number of different methods such as using monetising links that bring in a revenue share, but they stopped that. Pinterest had a marketing strategy of having invites but now have opened it up for anybody to join.