If we're not at peak emoji yet as a society, it feels like we definitely should be. The emoji concept has gone far beyond what anyone in Japan could have envisioned when the people there unleashed it on an unsuspecting world, but the West has taken it and just kept running over the past few years.
(Whereas the Japanese now have apparently disowned them.)
There's money in them there emojis though, especially when it comes to emoji apps. People just can't seem to get enough of them, and while a series of those apps have rotated through the top of the App Store charts over time, the latest one to create a buzz means it's a fine time to consider five that are popular right now.