> The only advertisement I can consider a good one is a shop sign on the shop/restaurant and perhaps a sign on a nearby crossing to direct me there. You could

> The only advertisement I can consider a good one is a shop sign on the shop/restaurant and perhaps a sign on a nearby crossing to direct me there. You could argue that the original Google search ads fall into this category ( before they were changed to look more like search results ) - ie they much more likely to be directly relevant, indeed helpful, to the search activity.