dupichasm
Dupichasm – A deliberate deception used to promote a service or product online. This could be in the form of bogus critic's reviews or from using a 'pay per like' fee charging business. The intent is to increase the popularity and demand for something that's mediocre in reality.
First used as a phrase on an IMDB member's review 8th February 2015.
“......and then realise that the reviews are a plant, a dupichasm, a lazy attempt by SiFi channel to boost it's viewer numbers without actually delivering the promised/original article?”

“....I thought with the amount of 'likes' for this new cat food it really would make my pussy purr; but it was a dupichasm, she wouldn't even sniff at it'!"