I just encountered this: a product with numerous reviews but many of them talking about a different item. I assumed it was some id getting migrated or not migrated and as a result reviews ending up on the wrong item-- it didn't even occur to me that it might be intentional.

As annoying as scams like these are, they really speak to the ingenuity that folks bring to software and their attacks of it. I already know to not trust most things on the internet, but I can't help but admire them either.