I have made the Gurteen Knowledge Community Group on LinkedIn an open group. The major advantage of this is that discussions are now indexed by search engines and anyone on the web can read the discussions. It is also now possible to Tweet interesting discussions. To contribute to the group, however, you still need to be a member.
Discussions created before the switch have automatically gone into a members-only, read-only Archive and cannot be seen by anyone who is not a member of the group.
An unfortunate side affect of this is that discussions that were active before the switch, although still readable by members, are now frozen and not clearly visible.
If you wish to continue your open discussions I think you will need to repost them. I am sorry for the inconvenience but this was not clear before the switch. To my mind, LinkedIn have done an extremely poor design job here.
The bottom line though is that we should now have a far more useful place for group discussions that can be shared with the rest of the world.
The other good news is that over the past month, as a result of my mail-shot, the membership of the group has grown by almost 700 people to 1,989 members.
You can join LinkedIn here: https://www.linkedin.com/reg/join
You can join the Gurteen Knowledge Community Group here : http://www.linkedin.com/groupRegistration?gid=1539