"Since they first set up shop online, porn sites have had a problem with something they call the 'gak factor.' Husbands run up a credit-card bill at Soozee's Smut Shop, then go 'gak' when their wives see the monthly statement. Most, of course, deny any knowledge of the nefarious charges.

The wife then calls the bank that issued the card, reports the charge as bogus, and the bank cancels it. The adult-entertainment site is out the price of the subscription."
—Craig Bicknell, "Sex Sites Getting Screwed," Wired News