N obody will deny that information and knowledge play a very important role in our society. This role is becoming so big that our society nowadays is described as "the information- and knowledge society". But neither information, nor knowledge has any value in itself. The economic value of information and knowledge only comes into existence by using them. How high the value will be in a specific situation, can never by predicted. Therefore the value of libraries is not a given measure, but is always situation dependent and can only be measured afterwards. Because information and knowledge are very important, they deserve full attention. Square offers state-of-the-art solutions in an optimal match between supply and demand.