The first 150 comments telling me the name of the latest book they've read and a two to three sentence summary, get an invite.
- 150 Google Plus Invites (ghacks.net)
- Get 150 Google+ (Google Plus) invite (computerandu.wordpress.com)
- MORE atheists, etc., on google+ (toomanytribbles.blogspot.com)
- Google+: Now invite 150 of your friends in bulk (computerandu.wordpress.com)
- Google Plus Gives All Users 150 Invites - Here, You Can Have Mine (reelseo.com)
- Google+ Floodgates Open, Everyone Gets 150 Invites and an Invite Page (pcworld.com)