<p>SAN FRANCISCO She'd never cop to it, but deep down Marissa Mayer must be savoring some sort of sweet revenge.</p><p>When she left Google to become Yahoo CEO more than a year ago, there were more than a few snickers from the Googleplex often along the lines of, "Good luck, with that one," and, "Careful what you wish for."</p><p>YAHOO: Tops Google in Web traffic</p><p>But one year later, Mayer steered Yahoo past Google in U.S. Web traffic in July the first time Yahoo has claimed the top spot since May 2011, according to market researcher ComScore.</p><p><a href="http://www.usatoday.com/story/tech/2013/08/22/yahoo-tops-google-for-site-visits/2684059/">Keep reading...</a></p><p>Read also:</p><p><a href="http://bits.blogs.nytimes.com/2013/08/22/yahoo-surpasses-google-to-take-top-spot/">Yahoo Surpasses Google in Web Traffic, Somehow</a> (New York Times (blog))</p><p><a href="http://www.bloomberg.com/news/2013-08-22/yahoo-tops-google-in-u-s-for-web-traffic-in-july-comscore-says.html">Yahoo Tops Google for U.S Web Traffic in July, ComScore Says</a> (Bloomberg)</p><p><a href="http://blogs.wsj.com/digits/2013/08/22/yahoo-tops-google-in-u-s-web-traffic/">Yahoo Tops Google in US Web Traffic</a> (Wall Street Journal (blog))</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dkqP-3WjJC38PSMvaeVfp7OpggQnM&ned=us">249 additional articles.</a></p>