A silly pattern of thought already proven wrong...
A hybrid drive still uses more power in standby than a regular drive, and still more than an SSD.
reason since it has 2 controllers,and part of the power goes to the spinning drive.
Hybrid drives are better for 'green' desktop pc's, giving a small speed increase, while having some storage space available; and cheaper than having an SSD with HD both installed in your system.
Plus, it saves you a slot!
Good idea, but just not for netbooks/laptops.