I have read several articles related to Ajax and CPM advertising.

I am developing a site with draggable, map type aplication.

At this time I limit the ads refresh to 30m seconds and only if user clicks the map to drag (i.e. Ad doesn't get refreshed during click+drag, unless 30 secs elapsed from last refresh). I am useing affiliate links at the moment, since CPM and Ajax is a gray area, but would like to move towards CPM.

I can't seem to find any authoritative guidlines nor advertising sites who offer ads specifically for Ajax sites.

Has anyone had any experience with this issue?
What has worked for you?
Can you offer any resources/liks that will help me answer my concerns?