There are a growing number of LinkedIn Groups many of them dedicated to KM. There is no KM directory but here are most of the Groups (in no particular order) that I have found:
The Gurteen Knowledge Community is a global learning community
of over 17,000 people in 160 countries across the world.
The community is for people who are committed to making a difference:
people who wish to share and learn from each other and who strive to see
the world differently, think differently and act differently.
Membership of the Gurteen Knowledge Community is free.
