It would be nice that there would be a section.. like on art.com
that when you look at a picture.. (example: I clicked on a star wars episode II poster)
that you automatically get some related pictures (in this example: 5 other star wars posters appeared below..)
i dont know how it can be done (just relating categories with each other... or an automatic keyword search?) but it surely helps when someone new is looking for a picture..