I'm considering developing this but will post first. Looking for offers on AppDevelopment.org.uk All the other main extensions are taken - it's certainly a growing industry. It has some exact searches in it's own right but this increases with subdomains such as iPhone.AppDevelopment Android.AppDevelopment Mobile.AppDevelopment etc.... This then of course without the longer tail. As this is a techie industry the SEO benefits will be understood and a good domain for development as a business or feeder site to the main brand Please post or PM offers..