Twitter has recently changed the format of its content voting system and now displays a Like button below each tweet. A Like stands for a positive feedback for a tweet — use it to support the people you follow and to highlight interesting content on Twitter.
What Does the Heart Button Do on Twitter
Twitter recently replaced its Favorite (star) button by a heart shaped one, also known as the Like button, in order to put the microblogging platform more in-line with other social networks. Click on the small Heart to like a tweet. The button will turn red to confirm your action:
You can undo a like for a tweet by clicking on the Heart button again (turns grey).
Where is the Likes Tab on Twitter
Your liked tweets are classified below a Likes tab. Sign-in to Twitter and click Profile & Settings > View Profile to go to your Profile page. Click on the Likes tab: