The practice of sending messages in bottles (or other floating vessels) has been used to determine the flow of oceans and relay military information. Of course, folks also use the method to serendipitously send correspondence to whoever should stumble upon it. The same principle applied to a contest that designer David Colombini entered as a young lad. With the goal of seeing whose balloon would travel farthest, he and other children released them, and Colombini's made it from Switzerland to Austria. Now, he's made Attachment: a student project that accepts messages from a website, attaches them to biodegradable balloons and floats them off "haphazardly to a potential recipient."