Yes, I have heard of the "black sheep" who sell bogus formulas. Alpha Omega Labs actually has a program to provide users who have been swindled by charlatans with "the real thing" at a very discounted price. They also report that they believe some of the phonies have been government supported, intentionally, to discredit the real process.

Glancing at the derogatory article you linked to, I found this statement:

"“There is a misperception that black salve ‘draws the cancer out,’ when, in fact, it just indiscriminately damages anything it touches,” says board-certified dermatologist Mark J. Eliason, MD, FAAD, a member of the University of Utah team that conducted the research."

As someone who has now actually used the authentic product, it is clear to me that this is a bald-faced lie, or at the very most charitable, a complete misunderstanding resulting from researching some other product that is not the product sold by Alpha Omega Labs. It was absolutely obvious to me that the salve only killed the malignant skin, leaving sound flesh unscathed.

As far as literally leaving a hole - Yes! a nice, big hole devoid of cancer cells! And the very cool and amazing and wonderful thing is that my body knew how to "grow back" that hole and fill it with sound skin! Wow! How cool is that! :) :) :)