Comment A bug in an unrelated ad-functionality (Score 5, Informative) 121
According to him it was supposed to bump the advertised pages in the "following" list of their followers to the top. In order to do so it required removing it from the current position and reinserting at the top, as (again, according to him) the "following list" is not kept whole in whatever data structure it is stored.
I say equally damning because it reinforces the idea (common in here, not so common out there) that the user is not actually the customer but the product to be sold and "monetized" the harder it can be done without scaring him out.
This should be the definite proof of that (both the bugged and the intended feature) but people will happily trade their social influence for an easy to access technological soapbox.
No judgement being passed or merit being discussed on this post, just an observation of the current standing of the whole situation.