Digital Downloads

Looking for some tutorials on the digital delivery of products. I've
seen lots of books on stores with physical products, but I can't find
any tutorials on a store that can handle digital products. Any
suggestions would be greatly appreciated.

Sorry, this is the first time using google groups. There was a
massive delay from when I submitted my post and when it actually
showed up. The original topic is here
http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/51fc149a654b609e?hl=en