[JJR512]

I'm not sure how useful ZIP or postal codes would be. A post code is a sizable area. I have my pushpin stuck where my apartment building is next to the street. There's no way that could have happened with a post code; the pin probably would be somewhere around the center of the area, which could potentially be miles from where I actually live. As for using it as a starting point, I didn't find it that hard to click the zoomed-out map pretty close to where I wanted it to center it, zoom in about half-way, re-center with more precision, zoom in almost all the way, and make a final adjustment.

I guess from a whole-world-zoom-level, it wouldn't make any difference if the pin is off by even a few miles, but when people start to zoom in, well maybe it's just me but I want the pin to be right on top of me.