Interaction Rate for a Post
For a post, the interaction rate is relatively simple: it's the number of interactions (e.g. reactions, comments, shares) divided by the account size (followers/page likes) at the time of posting.
So if a Facebook post gets 10 interactions and its Page had 800 page likes when the post came out, that's: 10 / 800 * 100 = 1.25%
Interaction Rate for an Account/Page
This is often seen in a leaderboard or Intelligence, and the goal is to find an average interaction rate from the many posts in that timeframe. To do that, we add up the interactions of all the posts, divide by the number of posts, and then divide again by the average account size (followers/page likes) in question over the timeframe.
Let's say we're looking for the interaction rate of a Facebook page over a week. It has 7 posts totaling 100 interactions, and the page grew from 1,000 to 1,500 page likes that week (for an average of 1,250). That's: 100 / 7 / 1,250 * 100 = 1.14%
Interaction Rate for a List
For lists in Intelligence, we try to do the same kind of thing we do for an account. We add up all the interactions on every post from every account in the list, and then we divide by that number of posts. Then we divide by the average size (follower count/ page likes) of the accounts in the list. (In this case, we pick the latest size value for each account, not an average for each over the timeframe.)
Let's say we're looking at a Facebook list with 5 pages in it, each with 6 posts over the week, totaling 100 interactions. The page sizes on the last day of the week are 1000, 1100, 1200, 1300, 1400, which average to 1200. That gives us:
- 500 interactions
- 30 posts
- 1,200 average size (followers/page likes)
500 / 30 / 1200 * 100 = 1.39%
- We can only get account size (followers/page likes) from the moment we start tracking the account within CrowdTangle. If you look for an interaction rate before we started tracking it, we can't create an interaction rate over that timeframe.
- For Facebook, we only track page likes, not followers.
- We track Twitter followers, Instagram followers, and Reddit subscribers.