With the growing use of digital cameras, consumers increasingly are taking advantage of a service that lets them add their own photos to gift cards and greeting cards, Jeff Keller, chief customer officer at the Cardways.com unit of Chicago-based Arroweye Solutions, tells CardLine. When the company first offered consumers the option of adding photos to greeting cards five years ago about 15% used the feature, compared to around 45% today, he says. "We're finding the user base more sophisticated than we expected," Keller says. The company began offering customized gift cards two years ago and now has deals with 20 retailers that let consumers put a picture of their pet, children, vacation or anything else that is not offensive on two-thirds of the gift card. The other third of the card displays the retailer's logo. Those retailers include Overstock.com, Linens 'n Things and Circuit City. Arroweye announced a deal last week that will allow consumers who upload their pictures to Yahoo! Photos to add those images to gift cards. More than 7.2 million U.S. consumers visited Yahoo! Photos in September, Nielsen/Net Ratings says. Cardways.com charges the consumer $4.50 above the value on the gift card to customize the card, and the retailer gets 28% of that fee.