eftasteria
eftasteria – derived from the Greek επτά αστέρια – or, in English, “seven stars”.
A system of ratings similar to the popular and widely used “5 star” rating.
Eftasteria Polyonom Graphic Image
The 7 star rating augments the 5 star rating scale by adding a “neutral / not wishing to provide feedback” option and a -1 (minus one) option.