Another reason I should start consolidating the number of credit cards. Several weeks ago, I closed out a Macys card, Banana Republic store card, a Gap store card and a GM MC. Amazingly, my store cards weren't used and the last transaction was dated back in early 2001. I figured I had no purpose to keep it open and was quite surprised it was still OPEN.
cron, it's a good idea to check your credit report to see if you have any cards that were recently opened and if there's currently any unused cards, to just consolidate it with other cards or to just close it out. I have to start doing so myself.
edit: And I forgot to mention: back in December 2007, I received a call from Staples that asked if I authorized 5 orders of inks being shipped to some state I wasn't aware of. Somehow, someone got hold of my AMEX Gold card, which I rarely use and usually use when making Staples orders only and tried placing orders and having it shipped to another address other then mine. Staples managed to cancel 4 of the 5 orders and 1 order managed to slip through. I immediately called AMEX to dispute the charge and also to close the card. When I checked my statement online, I also noticed a few others charges from Aeropostale and Yahoo Mail!, which I never authorized as well. All these charges were disputed and AMEX credited my account. It's scary when situations like this happen.