Citation

The First-Ever Hashtag, @-Reply and Retweet, as Twitter Users Invented Them

Author:
Seward, Zachary M.
Publication:
Quartz
Year:
2013

Twitter is pretty simple, but it started out even simpler. The 140-character messaging service launched on March 21, 2006 with no way to send a reply or retweet someone. And it certainly didn’t have hashtags...