1. A method for document management comprising: automatically acquiring image logs, each image log comprising image data and an associated record for an input document being processed by one of at least one image output device within an organization; for each of the acquired image logs, automatically retrieving similar documents, including identifying keywords extracted from the acquired image data, and based on the keywords, performing a search among previously acquired documents archived in a computer-readable storage medium and accessible electronic documents stored in at least one other document repository to retrieve similar documents; and where a similar document is retrieved, computing a measure of similarity between the retrieved similar document and the input document; and based on the computed similarity, determining whether the retrieved document is a matching document and, if so, storing a location of the retrieved matching document whereby for the input document, a location of each retrieved matching document is stored; and providing a procedure for ensuring that a single version of the input document is archived in the computer-readable storage medium, the version being selected from the captured image data and any identified matching documents, except optionally where the job log indicates that at least one of the retrieved matching document locations is a public document source.