OpenStreetMap is now featuring adverts from a new location based advertising service, Mappam. Just like the old banner ads that OSM used to carry, the location based adverts will go away once you have logged in. Unlike the old ads, Mappam ads take up very little space – there is only one advert on the map at a time, and it only takes up 16×16 pixels. This means more space for the map and more relevant adverts for OSM users.
Just like with the old ads, all the revenue from advertising goes straight the OSMF Treasurer and for a trial period the advertising broker is not taking any of the advertising revenue.
Conversely, see this…
http://maps.google.co.uk/maps?hl=en&q=openstreetmap&btnG=Google+Search&ie=UTF-8&oe=UTF-8&um=1&sa=N&tab=wl