Actually, you really have to watch these credit card companies now adays. As far as most peoples "minimum amount due" doubling, well thats the .gov's deal. Before your minimum amount due was like 2% of your total balance. Well, they thought that they could help consumers pay off their credid card debt quicker and be in better financial shape by raising the "minimum amount" percentage. I think its now 4%-resulting in several people now having double the payment they used to. Now as far as APR goes, you have to be careful which card/terms you have. Some card companies now will base your APR off of your credit report. They will check it once a month, and if they see you have been late on other bills/loans, then they will view your account as a "risk" and subsequently jack your rate to prime + whatever which usually gets your 29.99%. The kicker of it is, you don't even have to be late on their bill, just other creditors, and they can raise your rate same as if you defaulted by having late payments on their account. Always have to read the small print...
I guess one way to look at it/avoid it--pay all your bills on time and you won't have to worry about it!
--I know, easier said than done most of the time- thanks to THIS DAMN SITE!!!
ETA-GET BOTH!!!