Even now that the battle for internet advertising search dollars has all but been won by market leader Google (NASDAQ: GOOG), market followers Microsoft (NASDAQ: MSFT) and Yahoo! (NASDAQ: YHOO) are still not giving up without a fight. Both internet portals are just shifting as fast as possible to the mobile space. As in, mobile phone.But Google already is a leader there as well -- and it's something I've heard from Google CEO Eric Schmidt's lips for over 18 months now: the new frontier is mobile. Mobile search, navigation, browsing and related activities will be brought (hopefully) to a more broad audience due to numbers alone. There are way more internet-capable mobile phones in use globally and in the U.S. compared to total personal computers in use. Sounds like quite an opportunity, yes?



