I’ve tried Zooomr out a couple of times but Flickr still wins due to size of community, other application support and features. However Zooomr today added Portals which is a nice way of adding details to photo’s and linking through to other photo’s in a set – almost like picture within picture on a TV. Good examples can be seen in the video on Zooomr Blog.
Click on the sample below that you allows you to see it in action (not IE7 friendly but works well in Firefox)