If I can suggest something, please take closer look on stake rewards in for example Twitter and Signature campaigns. If you want count stakes from all social media campaigns this differences in rewards are very strange..
I could not understand why some are joining this bounty campaign without first looking at the date when it was posted -- Posted on: 04 October 2018, 18:38:53 -- which is almost one year ago.
I'm starting to think that people who write authentication posts have paid for each post, regardless of whether they sign up for an active or long time ago ended campaign.