I have been working on an android application to work with my http://celebrityastrology.net site. It is now in alpha and can be downloaded from the android marketplace. Built a json service into the celebrity astrology site, after doing mobile/webkit optimized version. Application works with this service to display lists and show content. I needed to downgrade the chartwheel activity to a webview until the image viewer can be perfected.
I have been working on an android app to work with SmugMug and their api. Getting started with their JSON api is good and works as advertised. It’s fast and reliable. Parsing using the org.json libraries (http://json.org) works well. For working on small footprint applications some changes to their api would be appreciated, particularly being able to work with a smaller result set or a paged result set from the usertree and albums interfaces would be good. In a larger footpring this isn’t a real problem.