Fifteen posts a day spread out over 24 hours is burst posting? I used to post much more a few years ago without being in a signature campaign and that was fine?
Is there any reason why some are warned and others are straight up banned?
You had participated in a campaign which has hired yahoo62278 as quality checker. He checks the quality of posts and has the right to decide based on his own criteria. This is same as any other campaign in the forum which the manager has the right to remove any participant. In cryptotalk campaign, Yahoo62278 is not the manager, but he has the right to remove everyone as Yobit has asked him.
Here is Burst-posting definition by Yahoo62278
Burstposting definition- A person that makes a posts then 1-5 minutes later makes another, and another, and another. I will not add someone here for burstposting if they have 1 post right after another every once in awhile. Sometimes a person reads the forum and makes a reply, then sees another topic they have a constructive reply for, but if quite a few of your posts are 1 right after the other, then you'll find yourself here.