The skill to use content from the Internet critically, and to select from the huge amount of information on the Internet the bits which are adequate for one’s needs, is important from an individual as well as a societal perspective. Critical assessment includes, as the first step, the ability to identify the source of a piece of information presented on the Internet. This skill was measured as the confidence in identifying the source of information on the Internet. In the EU 40% of the population regard themselves as very or fairly confident in identifying the source of information on the Internet (Denmark 62% and France 24%). Among the candidate countries, Slovenia and Estonia come close to the EU average, while Poland, Hungary and Romania lag behind.