Hashing Out Hashtags: What They Are & How to Use Them [Infographic]

What do overalls, Mariah Carey's Christmas album, and hashtags all have in common?

Believe it or not, they are all products of the 90s.

While hashtags didn't rise to popularity (with the help of Twitter) until after 2007, they were actually first used during the late 90s to categorize items into groups on IRC (Internet Relay Chat.)

via HubSpot Marketing Blog http://bitly.com/1ERdq8E