Nowadays, the Internet content based service are being split in main parts: Content, Service, Network (Transport), Consumer. All these entities have clear relations among them, which defines clear content flow from a content originator (author) to a content consumer. These parts are provided and represented by adequate entities. Content is originated from the author. Then the author passes content with right to a content provider. The content provider will then provide content to service operators. Service operators are offering service consisting of content to the end customer via network. Network is provided by a network operator. Not all the entities are necessarily separated from each other. Mostly, the service provider and network operator are the same entity or the content provider also operates the service.