Hi all,
I've built an extremely simple photoblog with Drupal 7 at http://www.shazanahhassan.com. It's a very basic daily photo type affair with functionality that could have been easily supplied by PixelPost (or Wordpress).
So why did I use Drupal?
In a word, extensibility. Galleries, blogs and whimsical projects can be added easily. The Views and Image modules allow for hassle-free resizing and sorting. If it strikes me to make a little sub-site of every photograph I've ever taken on a Saturday, I don't have to delve into PHP to make it possible. If it strikes me to add a Portfolio element, I can do it with very little pain. Drupal makes even the simplest site seem like a simmering bowl of potential.
I've also noticed a couple of posts on the forum about the lack of Photography sites in Drupal. My initial plan was to create a full-on Photography Portfolio website but with the little free time I had recently, I think this is decent enough for a day's work! After all, I can add on a trillion new things when the mood strikes and time permits!
Additionally, because there is a lack of photo-centric themes for Drupal, I would like to develop this Photoblog theme further and offer it as a free download off my main website in the future so any suggestions would be welcome!