what is Hashtag? how it works..?

[Lishmalinyjames]

People use the hashtag symbol (#) before a relevant keyword or phrase in their Tweet to categorize those Tweets and help them show more easily in Twitter search. Clicking or tapping on a hashtagged word in any message shows you other Tweets that include that hashtag. Hashtags can be included anywhere in a Tweet.

[codiant]

Hashtags are words or multi-word phrases that categorize content and track topics on Twitter, Facebook, Instagram, Pinterest, and other social media outlets. Hashtags are preceded by the # symbol.

[axissoftech]

Those # crutches social media addicts use to fake relevance, cluttering servers with pointless metadata that bogs down performance and wastes bandwidth on viral chases.
They "function" by exploiting algorithms for fleeting exposure, but in reality, they're engineered laziness, driving shallow engagement spikes that crash your site's uptime with unnecessary traffic.