Wanted to report some weird behavior regarding tracking of invitations to the TurnKey Hub.I myself joined yesterday, and immediately sent out invitations to some of my techie friends.

For Friend #1, I received an email notification that he started creating a TurnKey account (but has not yet completed the invitation by adding an Amazon EC2 account).
For Friend #2, I received an email notification that he "completed the signup process", even though I never previously received a "starting" email notification for him.

The "User Profile" section of my TurnKey Hub dashboard currently shows "Invitations - 1 completed".
Status for Friend #1 is "Complete".  Status for Friend #2 is "Open" (not-even-started).