The Budapest Open Access Initiative provides the following definition of Open Access: Open Access refers to 'peer-reviewed scientific literature that is available online, free of charge and free of most copyright and licensing restrictions, and can be freely read, downloaded, copied, distributed, printed, searched, linked to, indexed, passed as data to software, and used for any other lawful purpose'. The only constraint on reproduction and distribution, and the only role for copyright in this domain, should be to give authors control over the integrity of their work and the right to be properly acknowledged and cited.