I think instant pay day loan companies like Wonga have done a lot for the cash flow problem. Personally, I've never used them, but if you have a bill and need to avoid a £50 late penalty, you can get a $100 loan at 1% interest a day, which is a brilliant value proposition if payday is a week away. I've seen a lot of criticism of these companies, but I think it's from people who don't understand the problem.