Information overload and (young) people's media use
A glance at the status quo of the information society and the development of the so-called 'digital universe' reveals that the amount of information searchable via the Internet is subject to continuous and rapid increase. This point is colourfully illustrated by an assertion we happened across: "today a person is subjected to more new information in a day than a person in the Middle Ages in his entire life" 01 .Of course, the validity of this statement depends on the social class of a human being living some five hundred years ago. Scholars, research workers or philosophers were most probably an exception to the rule. However, why do we feel this way? Why do we feel that we are faced with a permanent stream of information we are not really able to cope with and process?
"A lot of information, a lot of alternatives and a lot of choices have to be made. It takes time and energy and can cause stress and frustration when we make the wrong decisions, which we of course often do, as much of the information is aiming at making us feel that way. We live in a society of information overload, we get too many hits on the Net, too many reports to read in our job, too many power point presentations to listen to or, worst case, read too many meetings to attend, too many offers and mails in our physical and electronic mailboxes, too much "must read" information in order to be a good colleague, citizen or parent."02 John Naisbitt's frequently-used witticism ("We are drowning in information and starved for knowledge") from some 30 years ago may well be verified by the facts and figures in our times. A white paper from the International Data Corporation (IDC)03 calibrated the size and growth of the digital universe. In 2008, almost 400 billion gigabytes (3,892,179,868,480,350,000,000) of new digital information was produced. By 2011, the digital universe will be 10 times the size it was in 2006, reduplicating every 18 months. In ten years the digital universe will be 44 times the size it was in 2009. The duplication rate of published scientific information is, according to de Solla Price 04 , estimated to be every ten to twenty years. However, new challenges concerning the processing of digital information have obviously to be met.
How and to what extent do people use new media like the Internet?
A current survey by the Kaiser Family Foundation05 found out that the amount of time young people spend with entertainment media has risen dramatically. 8-18 year-olds in the USA devote an average of 7 hours and 38 minutes to using entertainment media across a typical day (this means more than 53 hours a week). Due to their ability to multitask, they actually manage to pack a total of 10 hours and 45 minutes worth of media content into those 7,5 hours.
In Germany, 50 million people use the Internet for private or professional reasons. They devote an average of 2 hours and 20 minutes a day to using the Internet. 10 percent spend more than five hours a day on line06 . 71 percent of those aged 7-10 use the Internet at home (provided their parental home offers access to the web). 93 percent of the 11-14 age group appreciate the benefits of web 2.0, a figure which rises as high as 99 percent for the 15-17 age group07 .
Researching information using search engines such as Google, Yahoo and Bing has advanced to the position of the most widely used Internet application. Although people spend a of lot time researching information, topics being searched are to a large extent either not scientific in nature or else confined to the level of popular science. There is no great difference between middle-brow users and researchers. A study conducted by the German National Library of Economics (ZBW), which undertook the questioning of scientific workers in 200708 , reveals that researchers also prefer search engines, even when seeking for scientific literature.
Fastest Rising by Quater

Fig. 1: Most popular searches on Google in the U.S. in 2009 09

Fig. 2: Most popular searches on Google in the European Union in 2009 10