1. A method comprising: generating a content signal indicative of a hand-formed mark, the hand-formed mark forming content for inclusion in one or more item list files that represents a machine-distinguishable tag as associated by a user via receiving an indication of a captured image of the machine-distinguishable tag, the mark being on a surface; generating a label signal indicative of a machine-distinguishable tag associated with the mark, the machine-distinguishable tag selected from at least two machine-distinguishable user-defined tags, wherein a unique user-created descriptor correlates to each tag; storing a representation of the hand-formed mark in a computing device as retrievable image content for the one or more item list files accessible via a list manager program, the one or more item list files being members of a data recipient file class associated with an electronic mail program; and distributing the image content as the representation of the hand-formed mark to a data recipient in response to a query associated with the label signal, wherein the data recipient is the one or more item list files within a computing device responsive to the label signal indicative of the machine-distinguishable tag.