I don't think the point is so much privacy or who your friends are... The question is; are you willing to give Google ad servers your location all the time?

This would add a new dimension to targeted advertisement, make Google a gazillion more bucks, and bring us 1 step closer to a more perfect Orwellian society.

"WAR IS PEACE", "FREEDOM IS SLAVERY", "IGNORANCE IS STRENGTH", "WOULD YOU LIKE FRIES WITH THAT HAMBURGER YOU JUST PURCHASED @ 41.889779,-87.625795"