• [The Mancunian Way: #smc_mcr Invisible communities: Can we see them?](http://blogs.manchestereveningnews.co.uk/themancunianway/2009/02/smc_mcr_invisible_communities.html)
    An interesting exploration of the concept and importance of invisible communities
    (tags: [community](http://delicious.com/adders/community) [communities](http://delicious.com/adders/communities))