How can I join demonoid.com now that the registration is closed?

You can get an invite to just about any torrent site here: http://www.torrentauction.com


OR

http://privatetrackers.jwnmedia.com/ is a forum that gives away invites to private trackers like demonoid register there and the admin will send you an invite.

Get one here http://www.geocities.com/privatetrackerinvites/


you could visit this blog..currently you can't get the invitation codes but you can request the torrent file to download in the comments of http://makeitmyway.blogspot.com/