If my logo doesn't look like the picture below, you might be using IE6.

Unfortunately, IE6 doesn't handle PNG files well. PNG files work really well on websites. They're very easy to create. They're small. They're easy to work with once you get them on the site. PNG files support true transparency, meaning you can put them over any kind of background and they still look good. Alas, IE6 can't handle PNG files.

I could do the normal webmaster thing and jump through a bunch of hoops to make my site look good with 5 different browsers. I could write some Javascript to detect which browser you're using and supply the appropriate graphics and design for your particular browser.

Instead I decided to call a spade a spade.  If you're using Internet Explorer instead of Firefox, you're using an inferior browser.