Photosharing service on Drupal?

I wonder if there's any good photosharing services out there - using Drupal?
I know of podcasting and video services running on Drupal, but how well would Drupal fare for a Flickr type photo sharing service?
Image upload and such is not exactly known to be best of breed in Drupal.
Does anybody know of solutions running somewhere?

I'm curious because I've been asked about this, and I thought that I would be able to find this easily, but I was not.

Would it be the right way to go - to integrate with Gallery?