[1] The only place to obtain any reasonably accurate estimate of the size and use of the Internet is from the Internet itself. See Larry Landweber. International Connectivity. Version 14 - June 15, 1995. ftp://ftp.cs.wisc.edu/connectivity_table/Connectivity_table.ps Computer Sciences Dept. University of Wisconsin - Madison, 1210 W. Dayton St., Madison, WI 53706, U.S.A; Network Wizards, Menlo Park, California, http://www.nw.com/. Internet Domain Survey, July 1995.

[2] This ease of delivery justifiably causes concern for holders of intellectual property rights. See for, example, Dreier T, "Copyright Digitized: Philosophical Impacts and Practical Implications for Information Exchanges in Digital Networks" in World Intellectual Property Organization ("WIPO") Worldwide Symposium on The Impact of Digital Technology on Copyright and Neighboring Rights 187 (March 31-April 2, 1993).

[3] An index to payments related developments may be found on the Web at http://ganges.cs.tcd.ie//mepeirce/project.html.

[4] These guarantees are not absolute, of course. The common law has developed methods for allocating the risks when there is "system failure".

[5] See Sedgewick, "Algorithms", Addison Wesley, 1983 and later editions of the same work. It seems doubtful that Caesar ever used such a simple encryption.

[6] It is, however, the basis for the most secure encryption of all. In the coding table substitute in the second line a sequence of randomly generated letters that is as long as the message to be encoded. Such a method is known as a "One time pad" and is the most secure encryption known.

[7] "I LOATH YOU"

[8] The method of choice for many years was the DES (Data Encryption Standard) still used in most commercial encryption. This has been overtaken by the "Clipper" chip.

[9] Rivest, Shamir and Adleman "A method for obtaining digital signatures and public-key cryptosystems" (1978) 21 Communications of the ACM 2.

[10] The method presented here is actually a simplification of workable methods. The additional complexities serve only to reduce demands on computer resources.