Google Inc, the most used search engine and internet ad provider has recently finished testing mobile advertisments for mobile phones in Japan. Indicating another new revenue opportunity for the search giant.

Yesterday in Las Vegas at the CTIA Wireless event Deep Nishar, a Google product manager, said “We’ve had a fairly successful trial of mobile text ads there.” It is known that the mobile population percentage in Japan is much higher that anywhere else in the world, and makes perfect sense for Google to be conducting research there.

Software that uses the geographic positioning features of cell phones will also be developed at Mountain View, California based Google, Nishar said. That will let a user search for nearby businesses without specifying his own location.

Surely this technology will be integrated in Google local for mobile, an application that displays road maps and satellite imagery onto your cellular phone.