What is the hashtag feature on social media? Why do we use it? How is it different across various platforms? Discover all this and more!

1. #purpose
#history
Oct 2007
the idea catches on
with #sandiegofire
to track discussion
of wildfires
Jan 2011
Instagram adds
hashtag feature
Aug 2007
July 2009
June 2013
the first ever use
of the pound key
to monitor a topic
Twitter embraces
idea by making
phrases following #
auto-hyperlink
Facebook adds
hashtag feature
#acrossplatforms
without hashtags
Tweets with
hashtags are 55%
more likely to be
retweeted, or
shared.
with hashtags
0%
% of tweets, retweeted
w/o hashtags
Posts with
hashtags are liked
approximately 10%
more than those
without.
with hashtags
.05
like-to-follower ratio
without hashtags
with hashtags
Early reports
show hashtag
usage could actually
damage Facebook
virality.
0%
median reach per page fan
Sources: edgerankchecker.com, danzarrella.com, + hubspot.com.
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