Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

Based on the good reviews on here, I decided to take a chance with this card. 3 weeks after using the card in my Canon 7D camera I took no more than 400 photos with this card. Today, we were out shooting some photos and all of a sudden my card can no longer be read. I've had many CF card in the past and they've always been rock solid. This is the first time I've had a CF card go bad on me and it's only 3 weeks old.
Negative Review