What I want to do is this: basically have a system where one user saves his/her address and if they choose to they can have their address displayed to their set friends to view where they live.

As bizarre and far fetched as the idea sounds, it's just something I want to test out and not make public. So anyway my website would store the exact location of where the user lives and then would access google maps (in an iframe or ajax load) and simply provide the address and let google render the location of it. This all works fine with ONE address, you simply just enter it into the input or provide it through the google maps API.

OK but how do I get google maps to display multiple addresses at once? All I want to have is say

(123 fake street) Chicago - (456 john street) Chicago and have the google maps API display both on the map rendering.

How do I do this?