Hashtag A hashtag is a type of metadata tag used on social network and microblogging services, allow
Hashtag A hashtag is a type of metadata tag used on social network and microblogging services, allowing users to apply dynamic, user-generated tagging that makes it possible for others to easily find messages with a specific theme or content; it allows easy, informal markup of folk taxonomy without need of any formal taxonomy or markup language. -- source link
#hashtag