I think if campaign managers see such shit posts that were edited, they would have one more reason to not count those posts for weekly payment.
For other members, we can report such posts as spam.
1xbit campaign is a scam contest, and users who apply and participate in it willfully promote such scams, to the detriment of their profile.
It is really little surprise that such dishonest members would try to cheat the campaign. The manager of the campaign most probably would not care about such edited posts, they probably just want to be in peoples faces, with the way they are throwing money into advertisement.
I have a question about reporting such posts, If the user edits the post before a moderator can check out the report, what would be an appropriate response to it? Especially if the new post is not worth deleting.