In case you hadn’t noticed, Facebook really doesn’t want to go public. At least, not yet. The seven-year-old company is now valued at $50 billion, significantly more than one-time Internet behemoths Yahoo! or eBay. (It’s also been said that the company’s value tops media giant Time Warner’s, but that’s only if you ignore the value of Time Warner’s long-term debt; throw that in and the companies’ enterprise values seem to be pretty much equivalent — which is still pretty amazing.) And this week the big news (and the source of that $50 billion valuation) was that Goldman Sachs had handed over $450 million and committed to invest as much as $1 billion more in the company — money that it plans to raise from wealthy investors.