Flickr
Web-based application to share photos. Tags can be added to photos and photos added to groups based on a topic so others can find them. Enables creating contacts and friends so that only they can see all or some photos. Photos can be cross-posted to blogs. Allows RSS feed of photos so others can subscribe or you can integrate photos onto other web pages.
If you have photos that you want to share with constituents, allies or others.
Flickr is available just about everywhere though governments will block it. To view flickr in the firefox web-browser in a country where its blocked, see: https://addons.mozilla.org/en-US/firefox/addon/6139
Displaying photos from Flickr on your websites is quite easy. You can also mark photos as private and keep unwanted eyes from seeing them. There are also several ways to categorise, organise, group and share photos.
You cannot upload sexually explicit photos (nude imagery is okay, if labelled 'May Offend'). Free accounts are limited to a greater of 500 photos or a total upload of 25MB per month.
Share photos of important events with constituents. Create groups where people can discuss issues. Ask people to support campaigns by uploading their own photos with specific 'tags'.
Egyptian Blogger Sharqawi uses flickr to show activities at demonstrations. http://www.flickr.com/photos/elhamalawy/322045664/in/set-721575942399487...
Yahoo, http://www.yahoo.com
Is yours. And you can attribute creative commons licensing to your pictures.
According to PrivacyInternational.org, Yahoo 'cooperates with governments with disclosure of information including the Chinese government'. (see http://www.privacyinternational.org/issues/internet/interimrankings.pdf). Starting or joining a group in the Flickr community is a way to get comments on your photos and start conversations.