I think many of you already heard about the "Bill & Melinda Gates Foundation". What you probably don't know is that the foundation website (http://www.gatesfoundation.org/) is powered by Linux :D (check here).

Why Linux? Two possible answser:

1. it's cheaper

2. it's better

So... do you think that the "Bill & Melinda Gates Foundation" doesn't have enough money to buy a proprietary operating system? In my humble opinion, they choosed the best and the best is Linux :D