I realize it's cliched, but man those credit card companies can be sneaky! The latest scam: I got a letter from Providian offering me 0% APR on balance transfers with no fee. So naturally I applied for this, and tried to transfer some big booyah from one of my higher APR cards.
When I get back from vacation, I have a notice saying something like, "Congratulations! Your new Providian card will be arriving shortly. Your transferred balances will have the low low rate of 9.9% APR, and because you transferred balances with us, you are eligible for our special 0% APR on purchases for 6 months."
Now, I assure you that I get tons of promotional offers from credit card companies, and I only apply for the ones that offer 0% on balance transfers. The reason I picked Providian's is that they also had no one-time fee for signing up. True, I didn't save their original letter, so I don't know if they outright lied. But they certainly wrote an intentionally misleading letter, to get people to think that the 0% would apply to their transferred balances, and not just to new purchases.
Finally, they didn't even transfer any balances! A little later, I got a letter saying that there was a problem and the balance transfer couldn't be competed. But hey! I should still feel free to use my new Providian card, with 0% APR on purchases because of my balance transfer! Woo hoo!
(It's crap like this that makes people run to the government. I know, I know.)