No. 6: Palm

Palm's Pre phone was expected to spark the revival of a smartphone pioneer. With a bright touch screen, a slide-out keypad and a new WebOS operating software, the $200 phone debuted as the best challenger yet to the Apple iPhone.

The numbers. After a dismal debut and meager sales, the Palm Pre, sold exclusively by Sprint ( S), quickly fell in the bargain bin. In three months, the Pre price fell to $149. Getting into the spirit of Black Friday, Amazon has begun to offer the Pre for $80, a 46% discount on the previous price of $149.

The stock. Despite a 23% drop in the past month, Palm shares are still up more than 400% over the past year. A lot of that appreciation is tied to the value of the Pre as a contender in the booming smartphone market. But with the Pre prices falling so fast, it's difficult to stay as hopeful about Palm's revitalization plan.

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