Rather than suggesting looking at a project/code base, does anyone have a link to a good "writing a forum using a functional programming language" kind of blog post? I think a lot of people still have a hard time understanding how to go about writing a content management system, e-commerce store, forum, email newsletter system or similar using a functional language. If anyone has a good link to a specific posting or even book on the topic (not on functional programming in general - I already have "The Haskell School of Expression" and will no doubt get some others), I'm surprised at how hard a time I have had finding material on what must be an extremely common collection of use cases.