There was also kinda-sorta boingboing.tribe.net – while never an official system, for a while it served us when the comments were removed entirely.
http://boingboing.net/2003/10/07/tribenet-boingboing.html and http://boingboing.tribe.net/
With the slow death of tribe, boingboing.tribe.net turned into something of a personal playground for me for a while…
