> 1. Repurposing product listings for something unrelated and keeping the old sales data and reviews
Sure - but this seems trivially solvable by Amazon - you can't tell that a product listing for a knife set is not a tech product??
> 2. Merging product listings to aggregate unrelated sales data and reviews
Again - def happens I think. But can't these go through some type of review? The ones I've seen are WAY off when you look deeper.
> 3. Fake reviews that were unrelated to the product all along
This is harder, I'd have 2 amazon staff review higher volume products.
Any system Amazon puts in place will have a lot of false positives that require human review. And that is entirely aside from the fact that underhanded sellers will try to flood such a system with automated disputes until Amazon relents.
> The ones I've seen are WAY off when you look deeper.
You're assuming these disparate merges happen in a single step.
Several ways:
1. Repurposing product listings for something unrelated and keeping the old sales data and reviews
2. Merging product listings to aggregate unrelated sales data and reviews
3. Fake reviews that were unrelated to the product all along