I know most here seems to love t-shirt but personally I am a fan of a suit, or at the very least a nice shirt (Not a cheap one that looks like a tent please).
I see the points the author of the blog post makes but still, is it so bad to want to wear 'typical' business wear at a tech company?
Note: I love a witty t-shirt just as much as the next guy, but preferably on my free time.