I'll send you right to the <a href="http://consumerist.com/tag/credit-cards/?i=5023643&t=10-things-you-might-not-know-about-your-credit-card">source</a>. I have to admit, I didn't know most of those.
I wonder how that translates to debit cards. I mean, 90% of the time I swipe my debit card as a credit card (no, you may not have my PIN). Do the rules change based on how the card is used?