What Is A Hashtag?

A hashtag is a term that quickly marks what your message is about:

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philnelson Working on integrating #hashtags back into @tweatspace's code. Lots of changes! Very excited about this.

Sent 25 days ago from TweetDeck

Some people use hashtags to note when they're talking about a sports team (see: #cubs), or to monitor their work-out regiment. Really, Hashtags can really be used to mark whatever you like.

Got it? Good. Now we can talk about something similar but different, a part of Tweatspace called Filters →