Google's stock down 5% on earnings report

Google Inc.'s shares fell more than 7 percent late Thursday after investors realized that the Internet giant's expansion plans are not only ambitious -- they're expensive.

The Mountain View, Calif., company said second-quarter revenue jumped 58 percent, to $3.87 billion, as it continued to dominate the search-engine advertising market. But profit rose only 28 percent, to $925.1 million, because Google invested heavily to hire employees and develop products.