Making Cents: And in This Ring, Another Co-Branded Card

Affinity and co-branded credit cards continue to boom, each offering some special rebate or deal for consumers who charge. Some analysts think the card marketing is getting to be a circus--and, in fact, Ringling Bros. and Barnum & Bailey Circus has a card issued through MBNA Corp., which gives cardholders tickets to the circus and special merchandise, among other benefits.