Despite PLoS:One's data sharing policy that articles must share data (or be taken down), the data from the paper "Non-Visual Effects of Light on Melatonin, Alertness and Cognitive Performance: Can Blue-Enriched Light Keep Us Alert?” (http://www.plosone.org/ar...) appears to be unavailable. The authors of that paper originally declined requests to share the data then ceased correspondence on the matter. PLoS itself intervened and was able to extract a version of the data from the authors, but this version lacked the information regarding the order in which each participant experienced each condition, making the data useless. I've notified PLoS of this, but they have too ceased responding to my emails.