An anonymous reader writes "There are two types of office workers in the world — those who file their emails in folders, and those who use search. Well, it looks like the searchers are smarter. A 354-user study by IBM research found that users who just searched their inbox found emails slightly faster than users who had filed them by folder. Add the time spent filing and the searchers easily come out on top. Apparently the filers are using their inbox as a to-do list rather than wanting to categorize information to find it more easily."