http://distributedresearch.net/blog/2006/12/21/martin-cleaver-masterfully-%c2%bb-blog-archive-%c2%bb-wikis-compared-to-email-discussion-groups-and-blogs Distributed Action Research, communities of practice and social objects by Andy Roberts Mon, 01 Dec 2008 21:14:39 +0000 http://wordpress.org/?v=2.2