關於「What is hashtag」標籤，搜尋引擎有相關的訊息討論：

Twitter: What is a Hashtag?edu.gcfglobal.org › twitter › what-is-a-hashtagWhat is a (#) Hashtag?www.hashtags.org › how-to › history › what-is-a-hashtagHow to use hashtags - Help Center - X.comhelp.x.com › Help Center › PostsHashtag - Wikipediaen.wikipedia.org › wiki › HashtagWh