Great article, thanks for sharing. Fortunately my only experience with the MBTI has been the occasional lurk on online communities (like subreddits) where the "test" is taken far too seriously.
I recognize a few of the people in this video from 5secondfilms. :D
I'm surprised to find out that Buzzfeed of all people is doing long form journalism like this. Now I wish they did more of it because I like that sort of thing a fair bit more than a lot of their other, "normal" content.
I actually came across a website with a good amount of posters like these from Ghana a while ago.
That website is a timesink. Once someone links to it it's hard not to look at a few more letters, even if you've seen some of them already.
Relevant The Onion: http://www.theonion.com/articles/nasa-continues-search-for-p...