Hi
I don't know about the services mentioned above, but Sphere Online Judge (http://www.spoj.pl/) allows you to submit solutions written in Haskell (and many other programming languages).
From that we can see Haskell is the 7th best programming langauge - and that number of problems solved is almost exactly the same as rank. I think perhaps we need a little project to conquer this benchmark
http://www.spoj.pl/ranks/languages/ like we did the gentoo/debian ones.... I'll have a go and scraping together some people for this, and starting up a wiki page tomorrow. Lots of little programs, no particular need for optimisation yet, so could be a great chance for beginners and the more experienced who'd just like a quick hack once in a while. As a general trend in that ranking list, it seems functional languages have fewer uses who have submitted more solutions. Perhaps this can be used to say something about the productivity of functional languages... Thanks Neil