If you make use of Amazon's affiliate program, you probably know that the daily reports are often late. This site (http://affiliatebrand.com/Amazon/Reports.aspx) offers a service where you can sign up to get notified when the reports are ready; either by e-mail or by instant message. They also keep a log of when the Amazon affiliate reports are completed each day, so you can look at their track record (which isn't all that great).