Individualized Audience Targeting

New opportunities for online advertisers arise with the possibility of one-to-one Web applications. Software agents for example promise to "register, recognize and manage end-user profiles; create personalized communities on-line; deliver personalized content to end-users and serve highly targeted advertisements". The probably ultimate tool for advertisers. Although not yet widely used, companies like Amazon.Com have already started to exploit individualized audience targeting for their purposes.

TEXTBLOCK 1/4 // URL: http://world-information.org/wio/infostructure/100437611652/100438658450
 
Advertising and the Media System

Media systems (especially broadcasting) can be classified in two different types:

Public Media Systems: Government control over broadcasting through ownership, regulation, and partial funding of public broadcasting services.

Private Media System: Ownership and control lies in the hands of private companies and shareholders.

Both systems can exist in various forms, according to the degree of control by governments and private companies, with mixed systems (public and private) as the third main kind.

Whereas public media systems are usually at least partially funded by governments, private broadcasting solely relies on advertising revenue. Still also public media systems cannot exclude advertising as a source of revenue. Therefore both types are to a certain degree dependent on money coming in by advertisers.

And this implies consequences on the content provided by the media. As the attraction of advertisers becomes critically important, interests of the advertising industry frequently play a dominant role concerning the structure of content and the creation of environments favorable for advertising goods and services within the media becomes more and more common.

TEXTBLOCK 2/4 // URL: http://world-information.org/wio/infostructure/100437611652/100438657942
 
On-line Advertising and the Internet Content Industry

Applied to on-line content the advertising model leads to similar problems like in the traditional media. Dependence on advertising revenue puts pressure on content providers to consider advertising interests. Nevertheless new difficulties caused by the technical structure of online media, missing legal regulation and not yet established ethical rules, appear.

TEXTBLOCK 3/4 // URL: http://world-information.org/wio/infostructure/100437611652/100438658181
 
some essential definitions

some essential definitions in the field of cryptography are:
- cryptoanalysis
- cryptology
- ciphers

"Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break." (David Kahn)

codes
plaintext
ciphertext
to encipher/encode
to decipher/decode

The variants of encryption systems are endless.
For deciphering there exists always the same game of trial and error (first guessing the encryption method, then the code). A help to do so is pruning. Once, after a more or less long or short period a code/cipher breaks. Monoalphabetic ciphers can be broken easily and of course are no longer used today but for games.

for further information on codes and ciphers etc. see:
http://www.optonline.com/comptons/ceo/01004A.html
http://www.ridex.co.uk/cryptology/#_Toc439908851

TEXTBLOCK 4/4 // URL: http://world-information.org/wio/infostructure/100437611776/100438659070
 
cryptology

also called "the study of code". It includes both, cryptography and cryptoanalysis

INDEXCARD, 1/4
 
PGP

A cryptographic software application that was developed by Phil Zimmerman at the Massachusetts Institute of Technology. Pretty Good Privacy (PGP) is a cryptographic product family that enables people to securely exchange messages, and to secure files, disk volumes and network connections with both privacy and strong authentication.

INDEXCARD, 2/4
 
Memex Animation by Ian Adelman and Paul Kahn


INDEXCARD, 3/4
 
Amazon.Com

Amazon.Com was one of the first online bookstores. With thousands of books, CDs and videos ordered via the Internet every year, Amazon.Com probably is the most successful Internet bookstore.

INDEXCARD, 4/4