Twitter today  introduced a feature called Hovercards which will show additional information about user in cards  regarding his bio on a timeline when you hover over username. This features helps users to interact with them and also they can able to send DMs to them without leaving the page.

Hovercards feature in twitter

Hovercard feature in twitter

1. Will show the card of the twitter user when you hover over his username or avatar on a timeline on each tweet.

2. User can able to view the profile of each user in timeline by hovering over his username.

3.Users can able to send DMs to  them without leaving the page.

4.Will be useful to find more about retweeted people and follow them if you wish.

Hovercards features to twitter users will be rolled out in stages.So this feature may not be available to you now.

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