Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: I WISH I could return it!

It is useless! It darkens the screen a little but there is nothing "privacy" about it! In fact, it darkens the screen TOO much! I can stand anywhere and at any angle and can see the screen as clearly as I would if I was sitting in front of it. What a colossal waste of money. Sometimes inexpensive determines the quality of the merchandise.