A practice known as Astroturfing is where someone affiliated to a product or party writes reviews in glowing terms and pretends that they are spontaneous from members of the public.
It looks like a Belkin employee has been doing just that to products that previously only had poor reviews at Amazon. If you follow the links through you get to a statement from the president of Belkin which, although admitting there is a problem, doesn’t fully answer the charges. Others have investigated and found many more suspicious reviews under various names, some very thinly disguised.
I have always hated those fake review sites, especially when they cite trumped-up statistics to validate their supposedly “impartial” reviews. Guess pople are just suckers….