Instruct: Classify a review into positive or negative sentiment.
Query: Great show, terrible video service from Amazon

This season of Mad Men is great, but Amazon's video service makes it hard to enjoy. First, if you have a mac, you can't download the episodes and must stream them instead. Second, though my internet speed clocks in consistently at a pretty fast 12-14 Mbps, the video usually shows that I have "low" connection speed, pauses frequently to buffer, and has low resolution. I've also often streamed videos from hulu and netflix and never once had a problem with them, so I have to conclude the issue lies with amazon. Finally, when I tried to report the issue, I just got a form email back saying my internet must be slower than their required 1.5 Mbps (again note that my connection is nearly 10 times this fast according to multiple speed tests).I'm tempted to conclude that I've wasted twenty bucks and should just go back to buying shows from iTunes.