Over at “Coding Horror” blog, Jeff Atwood published an interesting article titled “Maybe Normalizing Isn’t Normal“.
But more than the article itself, the debate that ensued in the comments there is very interesting. The “High Scalability” blog published a compilation of some of the interesting quotes from the debate. This compilation provides a great overview of the (admittedly long) discussion.
I would recommend that you read the original article first and then the compilation of the quotes at the High Scalability blog.