Amazon EC2 Needs Automated Power Management

I have been experimenting with Amazon EC2 for the last few days. It turns out Amazon wants its users to leave their servers running at all hours of the day. Imagine if you were a small business and have recently expanded to the cloud. You may only need your cloud server to run from 7:30am to 5:30pm during normal weekdays. Amazon EC2 had no form of automated power management. It seems that the developers of the product have gotten caught up in making new features work, but have forgotten about how the customer feels about paying per hour.