Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Very Poor
Review: I used this mouse for a couple of weeks before it drove me nuts. The thing skips around all over the place - even when the mouse is sitting perfectly still on a flat surface the pointer was jumping around. It became impossible to even click an icon. I ended up buying a Logitech mouse, but this one was so cheap it wasn't worth returning. I know Microsoft products are usually very good though so I must have just had bad luck with this one.
