Reminds me of a thread from last year - Can you make a CPU using a hammer, tongs & metal - or some such :P..
Anyway, stay away from the Gulf of Mexico sand, unless you want your CPU to smell of tar balls .
I read an email forward about a year ago having the same contents as this article. I strongly feel this isn't an original (whatever the claims of the website might be). Great info anyway. I was always curious as to how a slice of silicon could do so much.