They say the decimal points are off by two places. Needless to say, you won't be returning to the deep sleep of the deserving any time soon. In addition to saving you from phone calls like this, testing can improve an application, save you time and money, ensure good will, and help you prioritize your issues and your schedule. Testing better positions your product for success. Testers can catch those embarrassing gaffes, slips, and errors before they go into production.
Testing is a critical part of the web development process.
You need to plan carefully how you will integrate it into your schedule, who will be doing the testing, and how the results will be delivered. Every project, big or small, can benefit from testing.