Google is close to releasing new tools that could expand its profitable keyword-advertising business and fuel growth as it prepares for a highly anticipated initial public offering, according to sources familiar with the plan.

The technology aims to enable Google to examine the Web sites of large advertisers and to develop automated lists of keyword combinations that are likely to turn up in search queries, the sources said. If successful, the system will match more searches to advertisements, and thus boost revenue.

An analysis of search-engine advertising suggests there is significant room for growth.

Google preps new tool to juice revenue – News – ZDNet