Jaiku the twitter-like application that was scooped up by Google last fall has been a bit dormant unless you already had an account.  The application is now ready for use with its google overhaul and is now allowing its existing users to send out invites again.  Jaiku also has a new privacy and terms of service agreement, getting its legal aspects in order until it goes full throttle. So start sending out so we can all join over at Inviteshare.