Of course not, but two of the three master instructors who posted in this thread have PBIA MASTER INSTRUCTOR in their signature, so every post they make it's there, so really not that hard to figure out what's available. You could also make a thread asking about available instructors in your area.
I would hope if someone posted a video of themselves playing pool in the "ask an instructor" subforum here, they would get some type of feedback other than a recommendation to go see a certain instructor(it's hard to give advice without seeing you shoot IMO), if not they might as well change the name of this section to "hire an instructor".
It used to be much worse here years ago. The salesmanship posts ran rampant. I fought aggressively here against that practice because I'm vehemently against it. But instructors aren't the only bad guys here. It works both ways. I've received questions through PM's here from players asking me for advice about a problem they're having. What if they're polling all the instructors through PM's, pinning one against the other? Nah. I'm not biting. My response to them is to post it in the forum so we can all address it publicly.