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

Una excelente guia para todos aquellos que deseen concer mas aobre el vino y su mundo. De forma amena y sencilla explica los principales conceptos y orienta sobre temas basicos como la eleccion del vino corecto, principales tipos de vino, como comprar vino en restaurantes o tiendas, etc.
Positive

I ordered this DVD and received a substitute I never received the DVD I ordered from Importcds (the Vendor). I contacted them and did not recieve any feedback. I can't rate a DVD I have never seen. I didn't bother to send it back because it would have cost me more that I orginally paid for it. In the future I will watch for the name of the person and/or persons I am buying from. I thought they were a good company. I understand a simple mistake but, to not get a response at all is not good businees sense. I spend hundreds of dollars a month on Amazon.com building my DVD collection. I guess I will be more careful in the future.
Negative

I was very happy with this DVD set (and in fact just ordered the breastfeeding DVD from the same instructor). I watched it in lieu of attending childbirth classes and do not regret that decision. I had read several books about labor and delivery, etc., and can't say that the video really contained a lot of new information but it brought the information together nicely and made me feel more prepared overall. I also appreciated the fact that the instructor did not spend a lot of time on breathing techniques and did not overly emphasize natural childbirth. Instead, she discussed the desirability of postponing medications until the labor is well underway because of the cascade effect of interventions (which seems sensible to me). But she certainly didn't try to push going natural all the way. As for the humor, it's not anywhere near as bad as some other reviews have made it out to be.
Positive