Happstack's been around for a long time, and has been used in a number of production systems (including at Deutsche Bank). They're certainly trying some interesting things.

> convince people to use Haskell for reald world apps?

The project is not the language.

If you want regular old approaches to web apps, there's libraries for that ( http://hackage.haskell.org/packages/archive/pkg-list.html#ca... ) in Haskell. But there's also happstack if you like their approach.

The vision all along was that the vast majority of web apps could be written in a MACID style -- they're not huge sites -- so make that as easy as possible.