For those that asked - no, you can't vote unless you're a member of the American Academy of Motion Picture Arts and Sciences. It's a professional organization composed of around 6000 motion picture professionals - including - actors, writers, directors, costume, tech, etc. To be a member, one must be invited to join by the Board of Governers. Membership eligibility can be achieved by having earned an Oscar nomination or if another member submits someone's name for some other outstanding contribution to film. They keep the number around 6000. It's all very formal and strict.