This guy posts 2 posts without boosting, boosts the next posts for 2 weeks. Once the crowd starts to get annoyed he begins the power down.
I believe this is a routine likely done by the same user. Create an account post some shit to trending send and move the money around and repeat!
This is where your investment is going, I guess it costs too much to flag it.
These are not high quality posts, in fact they are really low quality.
The only thing it would take to stop this is a few people to flag the profits off of it.