The book evaluates from the viewpoint of fundamental rights position of private individuals using copyright protected content on the internet for non-commercial purposes. This is done in relation to rights of authors and corporations owning the used content. Private individuals are in short referred to as "prosumers" whose possibilities to use content are protected by subsection 1 of the Article 27 of the Universal Declaration of Human Rights. Rights of authors are being evaluated through subsection 2 of the mentioned Article. Position of corporations is evaluated through traditional fundamental rights approach, which in general exclude legal persons from the scope of fundamental rights protection, which is also consistent with individualistic droit d' auteur copyright theory. From these premises the book demonstrates challenges related to strict applicability of copyright regarding use of content on the Internet by prosumers. References to other rights and topics such as the right to privacy and collective administration of content are also being made.