This document summarizes discussions at the Now and Future of Data Publication 2013 conference. Key topics discussed include: - Reasons for making research data available, such as verification of findings, reproducibility, enabling new analyses, and facilitating interdisciplinary research. - Emerging initiatives for data publishing and sharing such as data repositories, standards, and new types of data journals. However, challenges remain around sustainability, incentives, and ensuring quality. - Questions around how to best achieve the benefits of open data at large scales through machine processing while also establishing norms and practices around data publication. Partnerships and policies will be important to address challenges and realize the potential of open research data.