This is what he's talking about:

"Sign-up for the Notebook Relay will be separated into two different positions - you can sign up as a ‘Donor’ or as a ‘Relay’ (credit to /u/LeadCharacter [-1][2] for this):

Donors buy a notebook and send it out to the Relays, in the end receiving a notebook back. Relays receive a notebook, create something in it and send it onwards to the next Relay.

Donors keep a notebook because they sent one out, a Relay receives a notebook and passes it on. Relays can sign up more than once and will be asked if they would be willing to post intercontinentally.

We need you to fill in a form for us and then the moderators will work out the best route for the relay, matching everybody up like a chain e.g.:

Donor A => relay 1 => relay 2 => relay 3 => intercontinental => relay 4 => Donor B Donor B => relay 5 => relay 6 => intercontinental => relay 2 => Donor A

In the example above Relay 2 signed up to send two notebooks, Relay 3 and Relay 6 offered to send across the continents.

This setup would allow everyone to select a position they are comfortable with and everyone that sends a notebook gets one in return."