Instruct: Classify Amazon reviews into positive or negative sentiment
Query: waste of money

1. it doesn't differentiate very well between right and left clicks2. the scroll thingy gets clogged and won't scroll down any moreother wise it's great, it would be great I mean, if it weren't a defective design, apple seems to always want to sell stuff before it's ready, maybe in a year or 2 you'll be able to buy a functional mighty mouse