Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: my scanner hasn't worked since the day i took it out of the box, installed the software, and the green light is on but when i hit scan it does nothing! looks like it's a dud. lol.

A: Negative
****
Q: This video is fine for ballroom dancers, but it has nothing to do with the authentic Argentine Tango. Even ballroom dancing has now a separate category for Argentine Tango. Unfortunately, this video is not that. That's why, I rate it at 1.

A: Negative
****
Q: Do yourselves a favor and DO NOT buy this DVD. I think ever since the UFC switched to a different DVD distributor, the quality of their DVD's has gone through the floor. The picture is almost unwatchable because it is so blurry. I'm amazed that they even release stuff that basically has bootleg quality. I bought this DVD to enjoy watching Silva/Franklin over and over and over again, but I started getting a headache two minutes into it. Stay away from this. The UFC needs to do something about this because it's unacceptable for a company so successful to release such low quality garbage.

A:
Negative
****