The compatibility score of individuals in a social network is computed based on the compatibility of interests expressed by these individuals. The synchronization signal can be adapted to cause an initiation of a data conversion cycle at the second analog input module. Checkpointing may be incremental using Page Table Entry pages and Virtual Memory Areas information. The server edits the extracted general purpose additional information and individual additional information, creates the individual metadata for delivery, reads out the delivery requested AV contents stored in the AV contents database, and delivers the relevant AV contents together with the individual metadata via the Internet to the terminal.