The print-on-demand service that I’ve chosen for my book has a fairly nice web user interface with lots of Ajax code. Generally, that web application is one of the best aspects of doing business with them. That’s why I was surprised to find a rather amateurish flaw in their shopping cart. Here is the screenshot:
Notice the “do not click Place Order more than once” message. Someone has obviously identified that customers have been clicking more times than needed, but offering a warning message is not the way to solve the issue. In fact, such a message is a huge warning signal that something is wrong.
I'm Gojko Adzic, author of Impact Mapping and Specification by Example. My latest book is Fifty Quick Ideas to Improve Your Tests. To learn about discounts on my books, conferences and workshops, sign up for Impact or follow me on Twitter. Join me at these conferences and workshops:
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