In reply to Ryan Hellyer.

Probably I am just nitpicking ;)

When you say "easier" you should say easier than what, otherwise the sentence doesn't have much meaning. Even before calypso you could have written a JS based client that would managed wordpress via XMl-RPC. So the only "easier" aspect I can see is if you have already decided to do all your development in templating language which relay on json which is a great decision for wordpress.com as they can share the code between the app and the site, but I don't see many apps, except for "make an app out of your web site" type of apps, that do not want to go beyond the web and have some proper major integration with the local platform. Therefor with a user base of one company I find it hard to label it as a major improvement in any significant way.