The Google Mobile Blog announced that Google has added “popular images” to their images home page on Android, iPhone, Palm and other smart phone devices. When you visit Google Images on those devices, you now see “popular images” and a link to browse more popular images.
Here is the home page:
After clicking on the link, you get popular images broken down by category. The categories include trends, movies, sports, cars & bikes, television, cartoons and music.
Here is a picture of the images currently in the popular trends category: