According to the Wikipedia, Sneakernet:

"Sneakernet is a term used to describe the transfer of electronic information, especially computer files, by physically carrying removable media such as magnetic tape, floppy disks, compact discs, USB flash drives or external drives from one computer to another. Sneaker refers to the shoes of the person carrying the media. This is usually in lieu of transferring the information over a computer network."

Some examples:

"Google has reportedly used sneakernet to transport datasets too large for current computer networks, up to 120Tb in size.

The SETI@home project uses a sneakernet to overcome bandwidth limitations: data recorded by the radio telescope in Arecibo, Puerto Rico is stored on magnetic tapes which are then shipped to Berkeley, California for processing.

When home broadband access was less common, many people downloaded large files over their workplace networks and took them home by sneakernet. Today when home broadband is more common, sometimes technical workers at institutions with congested WAN links do the reverse: downloading data at home in the evening and carrying the files to work on USB flash drives."

Why do I blog this? I remember the first time I connected to the Internet in 1995, I printed 200pages. It's interesting to see that the sneakernet practice is still around, there are other examples that I've seen, such as people exchanging files on USB key (and checking if the file is deleted after the cxchange).