I read a guide here on BHW I think. He had a great trick for gaming google places. It was based on the differences in how Google looks at addresses vs how the post office does. I wish I could remember the specifics but if you search here you can probably find it. Basically it had to do with adding an extra line to the address field with wrong info. Google only looks at the first line, but the post office will look at the last line. Ie you make the first line as where you want to be on the map and the second line your actual address and the post office will always get it right when it comes delivery time. Again this is not a clear explanation of the technique, you should really find it for yourself. I looked for a minute but couldnt find it. It may be worth your time though.
Is this trick still working ?