ブログやサイトに貼り付けたウェブ地図に関連広告を埋め込んでくれるサービス「Ｍａｐｐａｍ」（ただし英文サイトであるが）
http://www.mappam.com/
Do you have maps on your website?
Mappam helps you make money by adding relevant ads targeted to the exact place your visitors are browsing.
It's easy to set up and works with all the big web map services - Google, Yahoo!, Microsoft, MultiMap and OpenStreetMap/OpenLayers.
