Google is making a move designed to strengthen its grip on the online advertising market. The Wall Street Journal reports that the search-engine giant plans to
introduce (as soon as Tuesday) a new service that measures Internet use. The tool is intended to help advertisers identify the best places to buy online ads by telling them which Web sites their target audiences visit, according to the Journal. Google’s new service could give the two main players in Web measurement — comScore and Nielsen Online — a run for their money because it provides for more sophisticated tracking of Internet use. Separately, Google this week is expected to debut a new tool showing how Web users respond to online ads.