What we see here is that while the number of followers exposed to a Tweet does have a positive effect on the number of times that Tweet is ReTweeted, it is a weak correlation, meaning that other factors play a much larger role. By calculating a ReTweets-per-follower ratio for 20,000 users and graphing the distribution of that metric we see that while most users have a similar ratio, there does exist a class of users with a much higher ReTweets-to-follower number.
Check it out! Twitter science with proper stats and everything! I don’t know what this means for me, but I think maybe I should get onto graphing my metrics in the morning.
(I think what it actually means is that number of followers doesn’t have as big an impact as you might expect on how often something is retweeted.)