institutional based researchers with complex, distributed projects, technologically or geographically. Such as multi-site clinical trials. Working Groups (WGs) evaluate candidate projects based on their unique characteristics and use cases. There are no specific project criteria or required sizes, although WGs may consider factors such as research goals, potential impact, technical challenges, host institution and sponsor funding. WGs typically discuss whether BIRN's capabilities will address the group's data usage requirements, which BIRN tools and areas of expertise would fit best, and related issues. BIRN strongly encourages inquiries from biomedical research groups nationwide. Among the characteristics of groups likely to get the most out of BIRN: the need to exchange data between multiple sites on an ongoing basis, not just from one site to another or for a one-time-only project, and/or to make data from multiple sites publicly available. On a social level, BIRN looks for groups that understand users’ data-sharing problems and can articulate how those issues affect them in day-to-day, real-world ways. Groups aren't expected to be technical wizards, but do need to be able to articulate specific data-sharing needs and problems. BIRN contributes technical expertise, while users provide the knowledge specific to their fields. For instance, BIRN can advise on how to go about defining user needs and requirements, but only users can determine specifically what those factors should be. Because BIRN isn't a plug-and-play, off-the-shelf product, the network seeks prospective users who are committed to conceiving, designing, building and implementing the best solution for their circumstances. References External links BIRN community website BIRN community overview BIRN community frequently asked questions National Institutes of Health Neuroimaging Bioinformatics organizations