This is already happening for a bunch of verticals:
Travel - Expedia, Hotels.com, Kayak, etc.
Consumer Goods - Amazon, WalMart, EBay, Etsy, etc.
Automobile Purchase - Cars.com, Autotrader, etc.
Career/Job - Indeed, LinkedIn, etc.
As Google continues to lose search volume on these big revenue categories it is going to make spam much more difficult as they are working to sort out long tail spam. Way harder.
Travel - Expedia, Hotels.com, Kayak, etc.
Consumer Goods - Amazon, WalMart, EBay, Etsy, etc.
Automobile Purchase - Cars.com, Autotrader, etc.
Career/Job - Indeed, LinkedIn, etc.
As Google continues to lose search volume on these big revenue categories it is going to make spam much more difficult as they are working to sort out long tail spam. Way harder.