This excerpt taken from the AMZN DEF 14A filed Apr 20, 2006.
write that nominees name in the space below.
Please sign above exactly as your name appears on this Proxy Card. If shares are registered in more than one name, the signatures of all such persons are required. A corporation should sign in its full corporate name by a duly authorized officer, stating his/her title. Trustees, guardians, and administrators should sign in their official capacity, giving their full title as such. Partnerships should sign in the partnership name by the authorized person(s).