Book Glutton: New Feature for the Group?

Guys,

You may have seen this story on All Things Considered.

Check out the video.
http://www.youtube.com/watch?v=TkCoknkwua4&feature=player_embedded

I'm not proposing the site as a replacement for our discussions.
I'm proposing that members that may want to use the "mark" feature within a discussed book can do so to add comments about a page, paragraph, etc.
I usually make notes on the margins of books as I read and bring the notes to the discussion.
This online comment will us to see comments prior to the formal discussion which may contribute to further in-person discussion. The "chat" feature could be used for mini-discussions before the formal meeting.

Just an idea.
BTW, sorry about the multiple invites to join the Glutton group I created.
The site was sending error messages which led me to believe the invitations were not going out.