Have a look at the photo sharing capabilities of MyHeritage, a family oriented social networking site.
A few things that set them apart are:
1) The Pics are fully integrated with your family tree.
2) They have a more ‘open’ concept, which allows you to import photos from other web properties (such as Picasa), and export the tags back.
3) The service is available in a multitude of other languages.

Anyway, hope this adds a bit of value to your post.

Cheers.