So: seek out feedback, don't dismiss it, and don't call the person giving feedback an idiot. Did anyone really learn anything they didn't already know from this? I'm calling linkbait.
For the part concerning feedback, I've seen a ton of douchy founders, and want to avoid being one of them.
Disclaimer: I'm the author of the post.
PS - I'm sure the interwebs are full of things you already know ;)