individual listings? yeah, there's no convenient way to link directly to an individual listing (making it tough to share with a friend), but you can right click in the body of a listing pop-up and view the frame alone, allowing you to copy the url of the frame. For example: http://www.myapartmentmap.com/listing/lightbox/1592589/?lightbox[iframe]=true
This is pretty sweet, too. It's like that map, but with other "walkability" data layered on it. Seems like something @pichot would like. Can even search by neighborhood...though I didn't look too deeply.