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

I was surprised to see that the item was used. Advertised as new. Would have liked the new ones stead got used.
Negative

My little boy is just getting interested in these blocks. They are too cute! He's learning to manipulate the block in his hands. The little things inside the blocks are adorable. Some spin, some twirl, some rock. A definate upgrade from the standard wooden blocks.
Positive

This product does not work with my ibook G4. As stated by some earlier reviews by other customers, the charger toggles between charging and not charging. Occasionally, if it is left on, it will continuously charge. I thought about keeping it, but it is unreliable and there are other third party options for $10 more.This one is going back to Amazon.

Negative

