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

Moi to you all,Nightwish est vraiment le plus cool des bands. Unqiue pis des tounes supers orginales, ca ma faite decouvrir le metal pis aucune autre band ma faite vribrer comme eux. A tous le monde cest un must buy.
Positive

I just plugged it in and it's on the job. Perhaps it would be more assuring if it had a digital read-out of level of monooxide in the air.
Positive

I have always recived what i ordered, but this one was not ..I ordered the hi rise, but recieved one way to short to the ground..it was to much trouble to send back, Im too old..I was dissapointed as now I can,t use it..husband can , but I can,t..be careful you get the right product...
Negative