Looks like it changed in October 2006, and so was invite only for the first 2.5 years: http://googlesystem.blogspot.com/2006/10/orkut-doesnt-require-invitation_

Looks like it changed in October 2006, and so was invite only for the first 2.5 years: http://googlesystem.blogspot.com/2006/10/orkut-doesnt-require-invitation_20.html http://googlesystem.blogspot.com/2006/10/orkut-doesnt-requir...