Granted such reviews are somewhat tainted, but in essence at lot of YouTube Tech creators are "shilling" someone's product either through free or limited use demo/beta products. RavPower makes high quality products with some capacities/configurations not available from other vendors. I was able to orders several products in the past 30 days directly from their web store. In each case the price was less thanAmazon's (sometimes considerably) even considering the 5% Prime VISA credit rebate (with free shipping). Why should Amazon allows any review that wasn't an authorized purchaser? What is the difference between these incentivized reviews and their Vines influencer program?? Granted all such reviews should be identified so one can make a decision.