Imgur comments: http://imgur.com/gallery/fvQcQzn
Stashed in: gifs, Things organized neatly., dickbutt, Oddly Satisfying
Things that fit well are oddly satisfying.
Another variation on this theme:
Reverse is oddly satisfying.
And then there's this.
5 Ways to Strengthen Your Friendships | TIME
Corvids could save forests from the effects of climate change
How Many Friends Can Your Brain Handle? - Scientific American
3 science-backed ways to make Karma work for you - The Week