My thought was that if someone reviewed something from another site and people were excited about it, it could be something EF would want to consider carrying. If not the same product, then something similar. People learn about something new* and EF makes more money. Everybody wins.
The bad thing would be if someone wanted a reviewed item EF didn't sell and then the person bought a product from a competitor. After not owning too many items myself for many years, I recently started shopping on this web site. I have tried to look at others, but I really don't like to. I prefer EF over any others I've seen. (Not trying to suck up; just giving an honest opinion.)
*I say people learn something new but I know it probably takes a lot for people that have been shopping for these products for a long time. Newcomers like myself are still thinking, "That thing does what?!"