Automated, probably no. Monitored, definitely yes.
As CMDR Corlas alludes, it's become apparent through bgs research that a lot of things are affected per transaction, rather than any volume.
I sold uas 1t at a time to fozard and kept it secret. Literally nobody knew about it, but it failed still. A month later, but it failed.
Walker survey, which never failed, got its uas in batches of 15-20 at a time, which is only at-most 30-odd transactions. I even publicly announced these shipments to walker survey and still nothing.
I did these experiments to work out more about the mechanism, whether it was just a written popularity contest viewed by fd on the forums, or sales monitoring. MB (paraphrasing) said in one of the ua threads that they can monitor sales of items.
Tl:dr a 'forum campaign' is not necessary.
Ps. Feel free not to take my word at face value, not here to preach gospel, so to speak, buy I've been toying worth this stuff for a loooong time