I'm loving the duality of opinions here (and elsewhere) about Facebook.
Either Facebook is changing the very foundations of the Internet, or it's a passing fad that will be dead and forgotten in no time at all.
It just amuses me!
Either way, I'm sure a lot can be learnt not only in the social-media domain, but also in general business. Anything that makes this sheer amount of money is either very clever, or very illegal.