Wow, this is very interesting. I find this an amazing comment. I'm curious what the bias for white backgrounds is (or at least not 'dark' backgrounds). It's very common in web design, yet relatively neutral for application and other graphic design. Document based applications are usually white of course, but games, content creation, utilities, and many other app types are not.
I have often wondered why white is so amazingly prevalent in web design. I'd never have expected such a strong reaction, but more than one person has commented on the background of this site.