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Different types of organization are involved in collecting blood and providing the nation’s blood supply (see Chapter 2), and these may influence people’s willingness to donate. Such preferences could be because of the nature of the organization or the individual donor’s motivation. One major difference among organizations is hospital‐based donor programs versus community‐based freestanding blood centers. Because the community‐based blood center serves multiple hospitals, the organization (and, by extension, a donation made to it) carries an image of service to the general medical community, along with a feeling of community pride and allegiance. The nature of the community organization may also influence the individual’s willingness to donate. About half of the blood collection in community centers is carried out by the American Red Cross. The other half of blood collection is performed by freestanding organizations whose mission is the provision of blood services. In contrast, a hospital‐based program is associated with a specific medical center and can take advantage of the image of that center and its physicians, programs, and patients. Although there are no definitive studies, it seems likely that these factors influence the types of donor and their motivation for donating to different organizations. The differences between organizations involved may also affect the setting in which the blood is collected, and thus may indirectly influence the donors or their motivation. For instance, hospital‐based donor programs are more likely to use fixed sites for blood collection. Although community‐based blood centers use some fixed sites, they use mobile sites more extensively than hospital programs.