Buffer, a social media startup, let the world know all its salaries. That's gauche, right? Or maybe it's genius...

[youtube http://www.youtube.com/watch?v=nxEMcdTlMgY&w=600&h=315] A little over a month ago, Buffer -- a startup that, among other things, lets you schedule your social media postings -- decided to publish its salary format and the salaries of all its current employees on its blog. You could see, for example, that the CEO -- interviewed in the video abov…