I think it would be a wonderful idea to have a shared bookmark site, as we email each other a lot of useful sites to show clients but these sites are not accessible from our web page. An example would be there is a lot of sites teaching people have to use various IT programs/software which are self based programs.
LibraryThing
http://www.librarything.com/home/selinal
I think LibraryThing would be very useful to have for online bookclubs. As you can talk in the group forum, search all group members' libraries at once.
With Talk, the forum system, you can see the conversations happening in your groups. You can also find just the topics that mention your books.
