Manipulating behavioral factors (PF) for Yandex should be used like any other tool — wisely.
Simply having rankings doesn’t generate traffic and leads on its own — don’t forget that.
We had a long debate with the service owner, and the stumbling block was me saying that rankings alone mean nothing because there are thousands of search phrases people could click through from.
And he says: «The rankings are there, so the service is doing its declared job — what more do you want?»
For now, I’m testing it myself to make sure everything works properly — specifically that it pays off and turns a profit, which goes beyond just nice-looking ranking numbers.
That’s my opinion for now while the tests are ongoing.