It is paid exposure. It might end up bringing you revenue, it may not.

Great analogy! In essence, it becomes like a Super Bowl ad, which unfortunately, unlevels the playing field. Those with the most money, buy the most and best ad space and time.

As for exposure, I suppose this is a means; but, posts that are 'bought' which lack quality aren't really what I want crowding my feed.

I guess it's an ethical preference for earning. Bots are within the lines; and, I made peace with them long ago.

it helps to keep things active around here.

Yep, that's for sure! ;+)

Peace.