Last November, Google introduced its My Location feature in Google Maps for Mobile. It uses cell tower IDs to triangulate the location of the phone and then identifies that location on the Google Maps interface. With a bit less precision, it essentially does the same thing that GPS does: eliminate the need to enter a geomodifier to find things nearby.
It thus saves keystrokes in mobile and also lays the groundwork for more precise mobile ad targeting at some point in the near future. Google has now taken that same cell tower triangulation approach and brought it directly into Google Search for mobile.
More: continued here
