According to a survey from Global Language Monitor, the heart emoji was the most popular "word" of 2014.
But what are the most popular emoji?
You can actually see what the most-used pictograms are thanks to www.emojitracker.com, a website by Matthew Rothenberg (@mroth) which tracks emoji use on Twitter - in real time.
Currently, the top 10 are as follows. Which of the following is your favourite?
1. Face with tears of joy
2. Black heart suit
3. Heavy black heart
4. Smiling face with heart-shaped eyes
5. Unamused face
6. Smiling face with smiling eyes
7. Okay hand sign
8. White smiling face
9. Face throwing a kiss
10. Loudly crying face