Woo, look I’ve stripped off all my clothes and I’m running around naked on the internets!!!
I’ve only found out about this by accident, and I am somewhat late in stripping off, but I think it’s a fantastic suggestion. The whole idea is to promote Web Standards through the proper use of (X)HTML and semantic markup, together with a good hierarchy structure. There are already well over a thousand websites taking part. You can join in to, just visit CSS Naked Day 2007 and sign up. It’s still not too late!