I'm not sure that's necessarily true. Sites like Amazon, NewEgg, EBay, and anyplace else with a ratings system for products and product sellers seem to do fine,

I'm not sure that's necessarily true. Sites like Amazon, NewEgg, EBay, and anyplace else with a ratings system for products and product sellers seem to do fine, despite the potential for getting negative reviews and ratings. These are sales channels rather than advertising channels, so maybe that makes the difference.