Maybe people prefer to see the whole image in reduced form sometimes.

However, I think that it will work against most people.  Many might just glance at the full image on the thumbnail and move on.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi