Question

$<b>why we use # in social media$​

Answer 1

A word or phrase preceded by a hash mark (#), used within a message to identify a keyword or topic of interest and facilitate a search for it. Whenever a user adds a hashtag to their post, it's able to be indexed by thesocial network and becomes searchable/discoverable by other users.

Answer 2

A hash tag (#)is a word or keyword phrase preceded by a hash, also known as the proud sign(#).it is used within a post on social media To Help those who may be interested in your topic to be able to find it when they search for a keyword or particular hashtag(#).