[Haskell-beginners] Critique my Code!

[blackcat at pro-ns.net]

 Hi,

 I was hoping to get a code critique from some experienced Haskell 
 people.  I put my code up in this blog post:  
 http://learnmeahaskell.blogspot.com/2011/03/playing-around-with-quickcheck.html 
 .

 thanks
 Lee