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STATE OF SOCIAL MEDIA IN THE U.S. 2021 POWERED BY SHAREABLEE
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Comscore Metrics Definitions
Actions: The sum of all reactions, likes,
comments, shares, retweets or
favorites received on content posted
by a property on Facebook, Twitter or
Instagram.
Actions Per Post: The average number
of actions received by a single piece
of content posted by a property.
Amplification: The sum of all shares
and retweets on posts and tweets
published by a property on Facebook
and Twitter.
Content: The total number of posts,
tweets and media published on
Facebook, Twitter and Instagram by a
property during a defined time
period.
Cross-Platform Actions (i.e.,
Engagement): The sum of all post-
level likes, comments, shares,
retweets, and favorites that a
property or category received on
Facebook, Twitter and Instagram in
2021.
Fans: The number of people who have
opted in to a property’s content. This
is calculated as an average of the
number of fans over the defined time
period.
Followers: The number of people who
have opted in to a property's content
on Twitter or Instagram. This is
calculated as an average of the
number of followers over the defined
time period.
Growth (%): A property or category’s
total actions from a date range
compared to the number of total
actions from a previous date range.
Impressions: The number of times a
property’s content is displayed on a
social network.
Share of Voice (Brand): The share of
average fans or followers acquired by,
total content posted by, or total
actions received by a property
relative to other properties measured
within a category.
Share of Voice (Category): The share
of average fans or followers acquired
by, total content posted by, or total
actions received by all the properties
in a category relative to other
categories being measured.
Video Engagement: The sum of all
likes, comments, shares, retweets,
and favorites received by videos
posted by a property on Facebook,
Twitter and Instagram during a
defined time period.
YoY: The comparison of a property or
category’s growth year over year.