CompUSA no sale
Need to have an example of not thinking through all the steps when building a Web application? Macwhiz tries to buy a monitor with good money, but bad application does not allow it. Having the credit from CompUSA on a CompUSA card and using to buy from CompUSA does not mean a thing. The buyer wanted it delivered to his office (always a logical option), but had his home address listed on the credit card (another logical option). CompUSA needed him to add his office address to the card (another logical option), but does not offer any mechanism to doing so (somebody will get fired).
When building applications there needs to be processes put into place to handle the needed options. Many times this requires a phone call to people trained in customer service. Not understanding processes before building an application or have ALL parties talking while developing an application will save embarrassment.
You should never start building before drawing a blueprint that takes into account all the options and needs. There is too much experience around to really have this happen with out a conscious decision being made (usually up the food chain) that stopped the options from being developed (if this is not the case they have the wrong developers or not enough time to have the processes worked out). These reasons are very close to why I will never buy from Barnes and Noble on line again. Ever.
Opening an application to the Internet opens the application to real people and real people provide a wide variety of aberrations to the planned uses for any application. Not having the time, resources, or approval to build in processes for easily handling these aberrations or spending time developing the application using user centered design/development skills will sink even the best funded applications. The user is always right and the real users must be a part of the development.