PLoS Biology: Why Full Open Access Matters

http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1001210

For some of us, open access is a matter of principle as much as practicality. The ability to self-archive and share articles might look the same, but there's still an underlying issue of copyright and ownership that is important for the long-term interests of open access scholarship.