Members of Search Committees: What do you actually do in reviewing files?

Philosopher Charles Pigden (Otago) suggested a thread on this topic would be useful, both to other philosophers on search committees and to job candidates.  He suggested addressing such questions as:  "What are the criteria that search committees employ and what traits are they looking for (or at least what traits do they suppose themselves to be looking for) when making junior hires?"  Signed comments will be strongly preferred, though as long as there is a valid e-mail address, making clear institutional identification, those comments will also be approved.