Have you ever used an emoji that represents ‘a face with tears of joy’ in your tweet? Then you are one among those using the most-tweeted emoji.

In less than two years after the introduction of emojis for tweeting on web, the ‘face with tears of joy’ emoji has been used more than 14.5 billion times in tweets.

Originated in Japan, emojis are picture characters. Many people use emojis on various social media platforms to convey an expression in one character.

In November 2014, a Twitter blog announced that it collaborated with the North Carolina-based Iconfactory for a set of more than 800 emojis. It said that tweets containing emoji characters would look as sharp on the web as they do in mobile apps.

After the most-used emoji, it is now time for the most discussed person on Twitter.

A tweet on TwitterData account said that the singer Justin Bieber is the most-discussed person on Twitter with 943 million mentions in a decade. Justin Bieber’s first tweet was in May 2009.

When it comes to the most-geotagged city on Twitter, the credit goes to the Brazilian city of Sao Paulo. This city has been geotagged more than 638 million times on Twitter.

The American television personality Caitlyn Jenner has the credit of getting fastest million followers on Twitter. Jenner, whose first tweet has been recorded on June 2015, got one million followers in four hours and three minutes. At present, Jenner has 3.85 followers.

However, the American actor Ashton Kutcher, who joined Twitter in January 2009, was the first one to get first one million followers.