#StaySAFU A hashtag is a metadata tag, typically prefixed with the hash symbol (#), used on social media platforms like Twitter and Instagram to categorize and group content by topic or theme. They facilitate cross-referencing and help users discover relevant posts and content. Hashtags are commonly used in microblogging and photo-sharing services. 

Elaboration:

Purpose:

Hashtags act as labels, allowing users to organize their posts and content, making it easier for others to find them based on specific topics or keywords. 

Usage:

When a user adds a hashtag to a post, it becomes a keyword that other users can search for. 

Platforms:

Hashtags are widely used on social media platforms like Twitter, Instagram, and others.