There's an easy way to avoid this problem

A BofA customer is upset that they doubled her interest rate on her credit card. If only they would double the interest rate of their savings accounts.

Now, BofA is squeezing every dime they  can out of there customers, and I’m going to drop them this week because of their new checking account fees, but you should read your credit card agreement before you sign it. Or better yet, don’t take their money and you don’t have to care what interest rate they charge.