I've never written about Snapchat. I didn't really get the point of its namesake app, the point of which was to post content that automatically disappeared. I knew it was wildly popular among teens and celebrities, both of whom undoubtedly had more content they wished wouldn't persist than an old fogey like me, but it just seemed purposely trivial. With their recent introduction of Spectacles, though, I figured Snap Inc. (as the company renamed itself) deserves a closer look. The Wall Street Journal broke the story (as Business Insider also did) with an in-depth look at Spectacles. It is not a new app, nor some new service on its existing app (which continues to be called Snapchat), but rather a piece of hardware: a pair of sunglasses that can record short videos. Users can record ten to thirty second videos, taken from the sunglass's perspective...