Creative Promotion with 100 Free Phones Hidden in a 5 Megapixel Photo

Vodafone recently ran a pretty creative advertising campaign called “Pixel Hunt” for the purpose of illustrating how many pixels LG’s 5-megapixel Optimus phone packs. They published a 5-megapixel photograph (presumably taken with the phone) on a website and invited people to zoom in and click individual pixels, with 100 of the pixels “containing” a free Optimus phone. It took 300,000 visitors a whole month to click each of the 5 million pixels.

Now if only Canon or Nikon would do the same thing with their flagship DSLRs! I wonder how long it would take a 21-megapixel photo to be fully clicked by rabid Canonites/Nikonians. Any guesses?