It is true that millions of users utilize Facebook’s built-in Chat system to communicate with their friends in real-time. Also, the implementation of chat emoticons lets them express their emotions without any language barrier. However, did you know that Facebook lets you use your friends profile picture as chat emoticon? Here is how it is.
To convert a user’s profile picture to an emoticon, just type a user’s name in double big brackets and hit enter. For example, if you want to show the image of Mark Zukerberg, then just write his profile name [[zuck]] and hit the Enter button.