Usability 
AudioBoo has apps for iOS, Android, Windows Phone and Symbian as well as mobile and desktop websites. The apps integrate with the device's voice recording capability allowing you to create and publish audio clips, called "Boos" with a single click. You can optionally include an image with your Boo.
Boos are published on the AudioBoo web and mobile site and there are lots of ways to share Boos and add them to your mobile or desktop site. Options include an embeddable player, WordPress plugin, Facebook app or a link you can email, add to a Tweet or put on your mobile or desktop site. Fire hose affectionatos can subscribe to all Boos from all users as either an RSS feed or as a podcast in iTunes.
As a mobile blogger and publisher the most interesting part of AudioBoo is the ability to link directly to a Boo. The now dormant mobile blog The Really Mobile Project, used AudioBoo extensively to publish interviews and podcasts.