RFE: Tools for insight into most popular questions

[mattdm]

Right now, one can sort questions by votes, but we have very low voting on our site (a problem of its own!). I'd like to also be able to sort by most viewed and by most duplicated (relying on the implementation of actual duplicates). That would show material which would be good candidates for formal documentation, blog posts — or even prioritizing bugfixes (when askbot is used for questions about a piece of software).