Yahoo! Finds a Mobile Home

Yahoo!(YHOO Quote) is putting its stamp on the mobile Web.

The Internet giant announced this week that its mobile oneSearch service can be accessed from about 85% of U.S. mobile phones. Yahoo! is betting big on oneSearch, a beefed-up version of an offering that debuted in January that will serve as the default page for Yahoo!'s Web browser.

The quick, high-profile rollout of oneSearch signals that Yahoo! intends to push its advantage in this emerging space over Google(GOOG Quote). Yahoo!'s service counts 7% of mobile users as customers, compared with only 4% for Google, according to research firm M:Metrics. ...