(BusinessWeek.Com) Bank of America Corp. said its credit card customers showed their best payment habits in two years in January.The Charlotte, N.C., bank said in a regulatory filing Tuesday that the rate at which it wrote off credit card debt as uncollectible fell last month to 9.2 percent of balances at an annualized rate, from 9.31 percent in December. The last time its default rate was that low was in February 2009. Card companies typically write off loans after they are 180 days past due, the point at which they assume they won't be able to collect the balances.Read full story >>>