Most Bounty Hunters, would tend to a shorter term promotions.
its for them to be available, and able to promote other projects for bigger profit.
for some longer term promotions, means bigger profit.
that is why it still okay for them
its depends on what they prefer
For me it seems like long term promoters are more reliable and tend to help decent projects to live through hard times of starting the project.
On the other hand short term promoters are more about getting profits rather than helping develop companies