Timeline BC ~ 1900 BC: Egyptian writers use non-standard Hieroglyphs in inscriptions of a royal tomb; supposedly this is not the first but the first documented example of written cryptography 1500 an enciphered formula for the production of pottery is done in Mesopotamia parts of the Hebrew writing of Jeremiah's words are written down in "atbash", which is nothing else than a reverse alphabet and one of the first famous methods of enciphering 4th century Aeneas Tacticus invents a form of beacons, by introducing a sort of water-clock 487 the Spartans introduce the so called "skytale" for sending short secret messages to and from the battle field 170 Polybius develops a system to convert letters into numerical characters, an invention called the Polybius Chequerboard. 50-60 Julius Caesar develops an enciphering method, later called the Caesar Cipher, shifting each letter of the alphabet an amount which is fixed before. Like atbash this is a monoalphabetic substitution.

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Public Relations and the Advertising Industry The public relations industry, the same as advertising, is concentrated in the hands of few dominant firms. Still, the striking element about corporate public relations is that PR firms are tightly related to advertising companies. Nine out of the ten biggest international PR agencies have close ties with the advertising industry. Also, looking at the largest acquisitions involving U.S. PR firms from 1997 to 1999 it is apparent that money coming from advertising agencies has played an important role. Table: Top 10 PR Firms 1998 Rank 1998 PR Firm Advertising Agency Related 1998 Net Fees (in U.S. $) 1997 - 1998 % Change 1 Burson-Marsteller yes 258,417,000 4.2 2 Hill and Knowlton yes 206,000,000 8.9 3 Porter Novelli Int. yes 183,050,000 23.6 4 Shandwick yes 170,300,000 7.3 5 Fleishman-Hillard yes 160,692,000 19.1. 6 Edelman PR Worldwide no 157,840,530 18.1 7 Ketchum yes 125,248,000 29.6 8 BSMG Worldwide yes 118,963,000 93.0 9 Weber PR Worldwide yes 83,166,000 36.2 10 GCI/APCO yes 79,667,957 28.4 With many PR agencies sold to advertising companies, the advertising industry's influence further increases; enabling them to offer their clients not only advertising services, but also know-how in marketing, public opinion, crisis and issues management and political lobbying. Table: Acquisition of PR Agencies (1997 - 1999) Acquired Company Buyer Buyers Industry Estimated Purchase Price (in millions of U.S. $) International PR Interpublic Group of Cos. Advertising 230 Fleishman-Hillard Omicom Group Advertising 85 Ketchum Omnicom Group Advertising 60 Dewe Rogerson Incepta Advertising 40 Financial Rel. Bd. BSMG/TN Public Relations 33 Weber PR Interpublic Group of Cos. Advertising 15 Alexander WPP Group Advertising 15 Charles Barker BSMG/TN Public Relations 15 Source: Odwyerpr.com.

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Montage Certain elements of two or more photographs can be put together, mixed, and the outcome is a new picture. Like this, people can appear in the same picture, even "sit at the same table" though they have never met in reality.

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DMCA The DMCA (Digital Millennium Copyright Act) was signed into law by U.S. President Clinton in 1998 and implements the two 1996 WIPO treaties (WIPO Performances and Phonograms Treaty and WIPO Copyright Treaty). Besides other issues the DMCA addresses the influence of new technologies on traditional copyright. Of special interest in the context of the digitalization of intellectual property are the titles no. 2, which refers to the limitation on the liability of online service providers for copyright infringement (when certain conditions are met), no. 3, that creates an exemption for making a copy of a computer program in case of maintenance and repair, and no. 4 which is concerned with the status of libraries and webcasting. The DCMA has been widely criticized for giving copyright-holders even more power and damage the rights and freedom of consumers, technological innovation, and the free market for information.

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