The new wave of XM Radios coming on the market offer MP3 recording capability which is cool because it allows you to record your favorite XM stations and then listen to them on the road, while working out, etc. Now they’re going one step better: they are adding a button that when pressed "bookmarks" a song that you like and the next time the radio is connected to your computer it will automatically buy and download the song via Napster.

This is the kind of concept I can see working for a lot of online companies down the road and not just from XM, but since XM is doing this already let’s extend that thought process.  Say XM starts a "Great Authors" channel and they have interviews and book readings with authors and they enable you to buy the book through Amazon with one click of a button.  Pretty cool huh?  Same concept could work for advertisers (some XM stations do have advertising), but that probably makes too much sense for most advertising agencies.