Instruct: Classify an Amazon review as either positive or negative.
Query: DO NOT BUY THIS CAR SEAT CUSHION ONLINE!!!

The seat cushion I bought from Amazon before Christmas 2009 stopped working after one month, just soon after the return window expired. Now I read more other buyers' complaints, I realized this thing could malfunction and could become fire hazard. DO NOT purchase online since you'll waste your money for sure and can't return.