Which social media platform added hashtag support in January 2011?
Answer
Instagram added hashtag support in January 2011.
The feature helped users discover photographs and find other people interested in the same subjects. Instagram’s early hashtag system was designed around its photo-sharing identity: users could add a word or phrase beginning with #, and the tag became a searchable link connecting related images.
This date is easy to confuse with Twitter’s earlier hashtag history. Twitter users had already adopted hashtags in 2007, after Chris Messina suggested using the symbol to group conversations. Instagram introduced hashtags later, adapting the idea for visual discovery rather than primarily for live text discussions.
Another common mix-up is confusing hashtag support with following hashtags. Instagram launched basic hashtags in 2011, but the ability to follow hashtags as though they were accounts did not arrive until December 2017. The two milestones describe different features on the same platform.