Examples of great websites for communities of practice

I’ve been giving some thought to the home of the Open Space Technology practitioner community, openspaceworld.org. A few years ago Michael Herman and I reconstituted this site as a wiki with the intention that it would then be open to be edited by the community, and cared for by the community as well.

Alas, it seems that this did not take as well as we had hoped and constant spamming meant that we had to close the editing function. You can still have a password if you like, and edit to your heart’s content, but it’s one more step away from accessibility. And the result is that a small group of us, and mostly Michael, end up taking care of the site which was not the original intention of building the wiki

And so I’m wondering if there are examples out there of great sites that act as centres of gravity for communities of practice. The Appreciative Inquiry Commons comes to mind, as does The World Cafe site, two communities of practice I orbit within. I’d like ours to be collaborative as well as “heftier.” And not spammable.

So, thoughts?