Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Suspicious of the recent 5 star reviews

I have noticed several 5 star reviews all from "A viewer from USA", this seems like quite a coincidence that with such a rash of 1 star reviews we have a spate of 5 or 6 perfect reviews all from people with the same description. It is a shame that the few who actually liked this film have to resort to in essence stuffing the ballot box in order to keep the score inflated. There are many poeple who reply on these ratings before deciding whether to spend hard earned money and it is a real diservice to them to write multiple reviews under false pretenses. I hope in the3 future amazon will require a different sign on for each review.