[ergo14]

I belive I saw some posts on webhostingtalk or some other forums that stated, that their method of operations is to buy tons of hardware - single platform (mobo) that they build their offering on - with greatly discounted prices from manufacturer. They will provide it for a year or so, and then they will create new platform again after a while after they are out of stock, this happens once every year I think. Also keep in mind those are not "server grade" components so don't count on expansions to the servers/ECC RAM - this kind of stuff - you want to scale - just buy more boxes, there are upgrade possibilities, but they are limited to my understanding.