Searched to see if anyone here mentioned ReviewMeta. If anything, this will make their service even more important because the beauty seems to be in tying all the fake reviews together, not necessarily using these keywords.
What's infuriating is that you know that Amazon has the talent and data to stop all the fake reviews. Makes you wonder why they allow it..........
They could pivot to filtering reviews based on web of trust - users could be able to provide a set of reviewers they trust, or it finds reviewers a user has a lot in common with.