Everybody use Internet to buy something. Many work with freelancers. And this is always a risk. Sellers and buyers, customers and performers understand this. Customers do not have a 100% guarantee that they will receive the order, or the work will be done as agreed. They risk with money and time. On the other hand, the performer or the seller does not have a clear confidence in the conscientiousness of the customer as well. In other words, there is no guarantee that both sides will fulfill their obligations.