FaceBook: When does it beome funny money ?

[Lamplighter]

NYTimes
January 2, 2011, 11:31 pm Venture Capital
Goldman Invests in Facebook at $50 Billion Valuation
By ANDREW ROSS SORKIN and EVELYN M. RUSLI
Tony Avelar/Bloomberg News

The deal could double the personal fortune of Mark Zuckerberg, Facebook’s co-founder.
Facebook, the popular social networking site, has raised $500 million from Goldman Sachs
and a Russian investor in a deal that values the company at $50 billion,
according to people involved in the transaction.

The deal makes Facebook now worth more than companies like eBay, Yahoo and Time Warner.

I've copied a Blog comment because I don't begin to understand this stuff:

Smells like the year 2000 all over again.
Do you remember Napster and the other Internet bubble companies?
What are they worth now?
Remember when MySpace was a big deal? Facebook is a passing fad
with no product or any true ground breaking technology.
$50 billion hype = hold on to your wallets.

Is this $50B going to put anyone to work that's not already working ?