a5e64d83_ureStatus20120119____XWiki_org__Status_as_of_2012_01_19
[Feature] Social Network Solution (turn your wiki into an internal social / collaborative network) [Status as of 2012/01/19] 
Partly done with the addition of user network, microblogging, user directory...
Feature Status - Jan 2012 (Blog.FeatureStatus20120119) - XWiki.org
Status as of 2012/01/19