I'd be interested to hear if anyone has solved the problem of embedding a series of pages inside of another (in the sense of Seaside) in a pure functional way. In other words, here's my challenge: write http://www.seaside.st/about/examples/multicounter using the same monadic style.

For pure shortness, I think HTML + JavaScript won here:

http://arclanguage.org/item?id=979

The Haskell example is interesting, though, because it shows a working webapp in Haskell, and it's not even that scary.

Except that these two code examples do two very different things. The Haskell version actually uses a continuation to run multiple requests The Javascript version modifies local mutable state. The Haskell version does it via server interaction, which makes it much more useful to modern web apps.