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

I'm sure the information presented in this class is good, but the presentation set my teeth on edge. Sheri thinks she is funny when she talks in a screeching voice and makes fun of new mother's foibles in her "funny stories". I cringed every time I heard her squeal as a pretended mother with a problem. If you can get past her, then I guess the DVD can give you the information and techniques you need for Lamaze. But unfortuanately Sheri spends more time talking or shrieking while trying to be amusing than just giving the information you would like to hear.
Negative

this DeLonghi DFH550R heater is an extremely poor product and the customer service is non-existent,doesn't have a physical address or phone number and never gives their names...buyer beware...read their absolutely ridiculous return policy before buying...if you open any package they won't take it back...if you write a truthful negative feedback, they'll be after you like " ticks on a hound " !!!
Negative

[Written by my daughter] At thirteen and a half years old, I read some of these stories laughing at the end because they were so pathetic. I fail to see the gore in here. There are no descriptions at all, and the plots are uncreative. If I were younger perhaps I would enjoy it more. So if you are looking to get this for someone under fourth grade, by all means, they will enjoy it. But for those who prefer real, set up and descriptive horror, get a Steven Kind book or something. Of course, this is coming from a girl who is read stories about women who kill their husbands with lamb chops and then feed it to the detectives, but, you know, that doesn't make the book any scarier.

Negative