Web page data is generated for rendering coupons, for a currency of value available to a user for increasing a value of the coupons and for one or more activities that can be used to increase the currency of value. When at least one of the activities has been completed by the user, the currency of value is increased by an amount specified by the activity that has been completed. A selection is received of a coupon whose value is to be increased. Additional web page data is generated to including dollar amounts to which the coupon may be increased. When the user selects one of the dollar amounts, a number of the currency of value is determined corresponding to the selected dollar amount. The value of the coupon is increased by the selected dollar amount. The currency of value available to the user are decreased by the number of the currency of value corresponding to the dollar amount.
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