For anyone wanting to share photos you could setup a flickr account.
Post photos to flickr but make them a "set"
From there I can grab a thumbnail and create a link to the photo sets.
If there are enough people interested, there is an API that will link Flickr and Drupal, the software the runs Nycfire.net.
We would have to apply to use the API, but first would need someone with a few sets of photos for testing.