I think that sometimes when someone sees the advertisement they immediately think their life will be better with the thing that they see in the advertisement. And sometimes there are famous people in advertisements and that makes people want the product even more.
An advertisement I think is well done is when it is a bit funny it has a well known person and it is really expensive
When used as nouns, shade is an uncountable noun that refers to an area of relative darkness blocked off from the light. Shadow, on the other hand, is a countable noun that refers to the silhouette or dark image formed by an object blocking the light. It is what causes the darkness.