If they algorithmically narrowed it down to a list of tweets that the brand should favorite, and someone on the other end picked one, is that spam? What if they

If they algorithmically narrowed it down to a list of tweets that the brand should favorite, and someone on the other end picked one, is that spam? What if they narrow it down to one, and the human just clicks every single suggestion? How much human do you have to cut out for it to be spam?