now publish the final papers in their electronic version as soon as they are ready, without waiting for the assembly of a complete issue, as is necessary with paper. In many fields in which even greater speed is wanted, such as physics, the role of the journal at disseminating the latest research has largely been replaced by preprint databases such as arXiv.org. Almost all such articles are eventually published in traditional journals, which still provide an important role in quality control, archiving papers, and establishing scientific credit. Cost Many scientists and librarians have long protested the cost of journals, especially as they see these payments going to large for-profit publishing houses. To allow their researchers online access to journals, many universities purchase site licenses, permitting access from anywhere in the university, and, with appropriate authorization, by university-affiliated users at home or elsewhere. These may be quite expensive, sometimes much more than the cost for a print subscription, although this may reflect the number of people who will be using the license—while a print subscription is the cost for one person to receive the journal; a site-license can allow thousands of people to gain access. Publications by scholarly societies, also known as not-for-profit-publishers, usually cost less than commercial publishers, but the prices of their scientific journals are still usually several thousand dollars a year. In general, this money is used to fund the activities of the scientific societies that run such journals, or is invested in providing further scholarly resources for scientists; thus, the money remains in and benefits the scientific sphere. Despite the transition to electronic publishing, the serials crisis persists. Concerns about cost and open access have led to the creation of free-access journals such as the Public Library of Science (PLoS) family and partly open or reduced-cost journals such as the Journal of High Energy Physics. However, professional editors still have to be paid, and PLoS still relies heavily on donations from foundations to cover the majority of its operating costs; smaller journals do not often have access to such resources. Based on statistical arguments, it has been shown that electronic publishing online, and to some extent open access, both provide wider dissemination and increase the average number of citations an article receives. Copyright Traditionally, the author of an article was required to transfer the copyright to the journal publisher. Publishers claimed this was necessary in order to