Because podcasts are difficult to measure in terms of statistics, Audible is rolling out a measuring tool aimed at podcast publishers who want to secure advertising on their podcasts.
The new service IS innovative, but because of several factors is not one I would recommend. 

It changes the file type to .aa.  This file type is [...]

The iPod, and other MP3 players, have earned a place in many people’s gadget collection, and deservedly so.  The ability to playback not only music, but podcasts, audiobooks and now, video makes these handy products indispensable for some.  Unfortunately, no matter how much we like something, we are not given extra hours in which to [...]