A manuscript based on some data collected for this projected was published at Collabra (http://www.collabra.org/articles/10.1525/collabra.24/), and we chose the "open review" option. The reviews for our manuscript can be viewed here: https://s3-eu-west-1.amazonaws.com/ubiquity-partner-network/ucp/journal/collabra/PR-Collabra-24.pdf. However, because our response to the reviews was uploaded in a Word file, our response to each round of reviews is not included in the above link. We therefore make available our response to each round of reviews in this component.