Facebook has revealed data with a surprising result about how users express laughter these days: "haha" and similar variations are used more than the iconic "lol." The social network analyzed user comments and posts and found that "haha" accounted for 51.4% of laughter expressions. The laughing emoji was next, with 33.8%, followed by "hehe" at 13.1%. Finally, at the very bottom, was "lol" with only 1.9%. Such a steep fall for an expression that still feels like we see everywhere.