Social-networking phenom Facebook has a new investor. Hong Kong tycoon Li Ka-shing now owns 0.4% of the operation, in exchange for a $60 million wad of cash. The price is consistent with the terms of Microsoft's (NASDAQ:MSFT) earlier and larger stake, valuing Facebook as a whole at $15 billion.

The very aptly named Ka-shing is one of the 10 richest men in the world, according to Forbes -- not far behind Microsoft chairman and founder Bill Gates. He worked his way up through plastic flowers and real estate, and now controls a keiretsu-style conglomerate with its fingers in nearly every piece of the Hong Kong pie. He's also a well-known philanthropist, with a frugal lifestyle that invites comparison to the Oracle of Omaha, Berkshire Hathaway's (NYSE:BRK-A) (NYSE:BRK-B) Warren Buffett.

So is this another one of Mr. Ka-shing's soon-to-be-famous business moves, or an act of corporate philanthropy? Time will tell, but Facebook certainly has the look of a hungry young success story. News Corp. (NYSE:NWS-A) (NYSE:NWS) chairman Rupert Murdoch -- another really rich guy -- is watching the usurper grow larger in the rearview mirror of his MySpace division. He might be wondering whether he bet $580 million on the wrong horse in the social-networking derby.

Then again, Murdoch thinks he could turn around and sell MySpace for upwards of $12 billion today. But before you start thinking that there are no losers in this game, consider the failure of Google (NASDAQ:GOOG) and its Orkut alternative. Let me put it this way: Even though Google runs its own social-networking platform and they have been known to enjoy their own dog food, more than 7,300 members have ventured over to Facebook's semi-official Google network.

Facebook has deep-pocketed backing now, and it's starting to figure out how to make some money of its own. So will somebody like Microsoft or Yahoo! (NASDAQ:YHOO) dig deep and buy the whole thing eventually, or is this another IPO waiting to happen? I'd bet the latter. Godspeed, Facebook -- and ka-ching!

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Fool contributor Anders Bylund is a Google shareholder and an avid user of nearly every service mentioned -- except Orkut. He holds no other position in any of the companies discussed here. The Motley Fool owns shares of Berkshire Hathaway. You can check out Anders' holdings if you like, and Foolish disclosure is always a smart move.