If a picture is worth a thousand words, how many words is an emoji worth? Dating back to 1995, emojis have become such a large part of our communication that approximately 5 billion are used every day -- and that's just on Facebook and Facebook Messenger! The most used emoji on Twitter and Facebook is the crying with laughter emoji, whilst the heart is the most popular on Instagram. In a fascinating piece on the World Economic Forum site, you can take a quick look at the history and growth of emojis that may or may not leave you with a "laughing face with tears of joy."