Interesting thing I found with the current Google Doodle...

[discopanda]

On a computer running Firefox 3.6.x (don't ask why, it just is

Comments

[porsupah]

I'd guess simply carelessness, plus a desire to promote their browser. I otter try it myself, but I've been feeling a modicum of reluctance, I'll admit, given the way it's been noted by almost everyone I know. ^_^;