Someone who is lost but not wanting to be found; may be under the influence of alcohol or street drugs-that for the most part of their time, during the day and night, spend walking city streets of cities in random locations throughout the world using Google Map-particularly, the street level cam option.
Bob was my best friend, until he started spending more time traveling on his computer with Google Map as a Google Map Hobo. He would much rather be "somewhere" else wandering aimlessly in some foreign city, than with me getting drunk in the bar.