I had four cards compromised in a two week period. All but one had been used by me to buy discounted gift cards through various online sellers. Although I try not to "store" that information on any of these sites, many automatically do so unless you opt out. All of these sites claim that they do not themselves store that information, and all such information is maintained by a third party. Nonetheless, I've been much better in keeping that informaiton purged from these sites, and things appear to have calmed down since.