This happens to me with ad sales reps. A blind add from them with the default message. I have to ask any sales people seeing this--does this ever work? Is it s

This happens to me with ad sales reps. A blind add from them with the default message. I have to ask any sales people seeing this--does this ever work? Is it simply to get your content marketing materials to show up in my feed for nurturing? Or do you expect me to accept and be open to hearing a sales pitch? What is the success rate of this tactic?