[corresation]

The argument is that a better user experience was abandoned in favor of a worse user experience that generated more impressions per user.

The argument is that an experience that Dustin Curtis liked better was a better experience. Maybe the victorious layout really was liked by more people, just as more people clearly like a 4" (or greater) smartphone screen than 3.5".

[ForrestN]

I have no way of knowing if the author is lying in his reporting on internal conversations that happened at Facebook, but his argument isn't merely that he liked it better. Rather it's that user testing revealed that it functioned better but resulted in less advertising impressions, and that facebook consciously decided to prioritize the latter.

[kenrikm]

Not sure, I've seen users kick and scream about change and then after all the fuss dies down they end up loving the product even more then before the change. The trick is knowing when your right. (Example: All smartphones need physical keyboards, Apple was right, how is BlackBerry doing these days?)