Even Google Is Vulnerable

Is Google(GOOG Quote) really recession-proof?

Investors are asking that question amid growing signs that the U.S. economy may be headed for a downturn.

The answer is complicated. Google's search advertising business is perhaps as insulated from a downturn as Internet companies can get. In fact, Google could even get a bump if the economy tightens. And given the growing overseas markets, the company may be even further protected. ...