When I checked this website review, maximum is FAKE review but the stupidity what MouthShut has done is. they have added all FAKE reviews rating as well. and this Job portal rating goes way high almost touching 4 star.
So If people have added FAKE reviews then either delete those reviews or do not add their rating on final rating.
I hope MouthShut will read this and amend their policy. Its just a matter of proper coding which I am sure you can do it.