The Consumer affairs website has this warning of a legal scam perpetrated by Vista Print, used by many artists for printing business cards and rack cards.
If you have ever used Vista Print for cards then you MUST read the information from the consumer affairs link.
It seems that this is a common occurrence - VistaPrint automatically opts you into a "rewards" program through an affiliate. The reward is that the affiliate cleans out your bank account or credit card! You are charged $9.95 a month for a program that supposedly saves you money. If you use a pop-up blocker, you do not even have a chance to opt out.
I learned of the scam from an artist forum as I was investigating the recent scam that involved many local artists from a Caroline Lewis, and other similar scams.