We look for a company to assist the Commission with carrying out usability tests with children between 13 and 17 years old on social networking sites. The purpose of this exercise is to test how young people find, use and understand safety features implemented by some of the social networking sites signatories to the "Safer Social Networking Principles for the EU". We want to check how they find safety information, how they understand it, how fast they find the privacy settings, how they understand them, how they manage to change them, whether they are able to find the report mechanism, how they understand it, etc. Youth participating in this testing will have to be from the UK, France and Germany. The contract is for work of minimum 80 days to be carried out over a period of a maximum of 4 months, with a maximum total value of 50.000 €.