del.icio.us

And it really is this two links I founded today a bit late but very interesting.

http://thecommunityengine.com/home/archives/2005/03/steve_rubel_is.html

Specially this one bellow, it has loads of information about virtual communities.

http://thecommunityengine.com/home/archives/2005/03/steve_rubel_is.html

Look in your personal del.icio.us bookmark manager