We all know that fashions change in clothing and fashions change in cars.  But do we also all know that fashions also change in kitchens, trade dress and postcards. The changes are influenced by technology but they would change anyway. Here is a fifty year look at some fashions in postcards:

Postcards used to have scalloped edges and no printing on the front.

Then came location or clever sayings printing on the front.

Multiview postcards were popular for a while.

Multimedia cards are trending.

And the latest fashion in postcards are stylized almost art deco illustrations of iconic scenes.

How do I know.  I belong to Postcrossing and I send all kinds of cards and the most popular right now are the bottom two.