." I'd suggest we can learn a lesson from that story as we 'build' the DPLA: we should work with familiar mental models of the library, for both browsers and searchers. Let's make this easy for our users." (Nate Hill)
"In this paper we measure the relationship between the narrowness of focus and the quality of contribution across a range of both traditional and recent knowledge sharing media, including scholarly articles, patents, Wikipedia, and online question and answer forums. Across all systems, we observe a small but significant positive correlation between focus and quality."