is http://brainstorm.ubuntu.com dead? I get redirected to http://community.ubuntu.com/ ? other references are dead as well. https://wiki.ubuntu.com/Brainstorm/
This mailing list suggest the closure in May 2013: https://lists.ubuntu.com/archives/ubuntu-devel/2013-May/037100.html
But I couldn't find any official note. Please enlighten me :-)