A great commentary piece by Mick Watson (@BioMickWatson) in Genome Biology where he discusses the six O's (Open data, Open access, Open methodology, Open source, Open peer review, and Open education). On the former:
…it is no longer acceptable for scientists to hold on to data until they have extracted every last possible publication from it. The data do not belong to the scientist, they belong to the funder (quite often the taxpayer). Datasets should be freely available to those who funded them. Scientists who hoard data, far from pushing back the boundaries of human knowledge, instead act as barriers to discovery.