The best incentive we currently have is the username claiming process. If/when project succeeds unclaimed usernames will be available to backers in the order that people backed.

What other incentives would you suggest? Happy to take suggestions. Today is the "announcement" phase, we are going to be collaborating w/interested folks and fleshing things out considerably more over the next month.

(p.s. I have been awake for far too many hours, so I am not sure I can effectively keep replying to everyone at the moment)