So a Facebook friend (really, someone I went to elementary school with, so "friend" is an overstatement), in accordance to instructions, shared a post from "Chevy USA" in order to qualify for one of five free Chevy trucks.
I looked at Chevy USA and saw that it only had 745 Likes. I voiced my suspicions that an established company like that would have thousands upon thousands of followers (in fact, 16 million). I said that such a group was likely created for Like farming so it could be sold later. Her response was, "ya never know." That's when I just have to give up.