Google has declared war on low-quality Web sites. In an effort to improve the value of its search results,
has upgraded its ranking algorithm in hopes of returning sites with original reporting, in-depth-analysis, and high quality content. In recent years, sites known as content farms have been taking advantage of the Google algorithm by copying content from reputable sites or publishing only words and phrases people might search for. The result is often a garbled mess of robot-speak that appears at the top of search returns. For now, the upgrade is available only in the U.S., but Google plans to roll it out elsewhere in the near future.