Perhaps I'm being overly cautious, but it feels like this answer needs more backup/evidencing based on your experience. In particular, the first point - to manipulate them - is a behaviour that puts up big red flags for me, and seriously reduces my opinion of the person doing it. That doesn't mean it can't be the correct answer, but I feel it needs at least some warning of how it could potentially be perceived badly. — Bilkokuya 17 secs ago