This is a cool promotion by HP to win one of their $5,000 "laptops" by entering at various sites.
It's a big prize, so these sites aren't just giving them away randomly, you have to do something to win them. Each site is different, but you might find a contest you like.
Check out
Ars Technica's contest, with links to all the other sites in HP's "31 Days of the Dragon".
* Processor: Intel Core 2 Extreme X9000 (2.8GHz, 6MB L2)
* Memory: 4GB DDR2 800 (2 DIMMs)
* Graphics card: NVIDIA GeForce 8800M GTS (512MB)
* Storage: 2x250GB 5400 RPM SATA (500GB total)
* Optical: Blu-ray player w/integrated DVD burner
* Display: 20.1" WUXGA 1900x1200 widescreen
* Weight: 15.5 lbs
* Battery: 65-DLG 44.5 lb (875 cold cranking amps) 9 cell Li-ion