Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Paperweights if you're on a Mac

Of the 50 Memorex CD-Rs, my Macbook Pro was able to successfully burn approximately 8. This means 42 CD-Rs ended up in my trash can.The package contained no warning about this. It wouldn't be worth the effort to pursue compensation but I hope others read this review and purchase CD-Rs from another maker.