Hashtag marketing is the new tactic to increase conversion rates by Samantha Gilbert 6 years ago Facebook
Facebook Introduces Trending Topics to Your News Feed, Not Unlike Hashtags by Landon Robinson 11 years ago Facebook
Google Enabling Hashtag Use in Google Search, Exclusive to Google+ Content by Landon Robinson 11 years ago Google
Facebook Hashtags Are Here to Increase Discovery of Public Conversations by Jeff Weisbein 12 years ago Facebook