A serie of articles of mine have been published recently on developerFusion.com. The articles explain how to use efficiently Gallio/MbUnit and WatiN to test your web applications. You can find already many interesting articles about web testing here and there. What I tried to do is to focus on a few less treated problems like testing on the local host, web pages with AJAX requests, controlling the Visual Studio web application server, etc. Good reading!
A big thank you to Dan Maharry and all the editorial team of developerFusion.com for having reviewed my articles.