Content attribute impact invalidation method
Content based web advertising
Content reaction display
Contest server
Controlled offer redemption system
Controlled transfer of information in computer networks
Cooperative work supporting method and system therefor
Coupon delivery system
Coupon delivery system
Coupon dispenser and method for generating coupons
Creating an incentive to author useful item reviews
Creating an incentive to author useful item reviews
Custom survey generation method and system
Customer activity data system and method
Customer activity data system and method
Customer buying pattern detection in customer relationship...
Customer history management method and system in online...
Customer identification and marketing analysis systems
Customer information network
Customer loyalty investment program