Once upon a time, Instagram was where you publicly posted the photos you were really proud of and wanted the world to see, while SnapChat was where you privately posted other photos that you were proud of, but only wanted a few people to see — and where there was no lasting record of the visuals. In the years since, Instagram has increasingly encroached on SnapChat’s turf, and the Facebook-owned service’s latest update may lead some to wonder: Is there any reason to have both SnapChat and Instagram? [More]