I just discovered a new photo sharing site today - OpenPhoto - http://theopenphotoproject.org/
This is a new project, so it doesn't have all the features that some other sites do, but it does offer the promise of being able to have more freedom of choice on how and where your photos, and their information, is stored.
It has a clean and simple interface - for example: http://swqetesting.openphoto.me/photos/list
And, it has one notable feature, it's open source!: https://github.com/openphoto/frontend