Abstract: Described herein is a system for promoting a user of a social network from a first discount level to a second discount level for purchasing a sponsor's product, comprising: a storage system for storing user records and sponsor records, each user record comprising a user identifier and a quantity of credits allocated to the user and each sponsor record comprising a sponsor identifier, a quantity of sponsor-purchased credits, criteria for allocating credits and a credit threshold for promotion from the first discount level to the second discount level; and a processor for receiving information relating to allocated credits from each user record and promoting the user from a first discount level to a second discount level for purchasing a sponsor's products by comparing the information relating to allocated credits to the credit threshold for the promotion, the second discount level providing a greater discount than the first discount level.