Good morning, I hope somebody might be able to help me with an issue we are having using Facebook for our research. We are attempting to use a Facebook profile to send inbox messages to the participants of our longitudinal study, many of which have become uncontactable by all other methods (letters, calls, text messages, etc). We have successfully tracked and arranged to interview many of our 700 participants via Facebook but now Facebook are asking us to verify our identity to use our account. The account name is the study name followed by a researcher name. We have submitted identification to Facebook under the listed researcher's name but are still unable to login to our account. We are writing to enquire whether any other researchers have experienced this problem, or have used Facebook to contact participants successfully? Many thanks for your time, Neema Dr. Neema Trivedi-Bateman The Peterborough Adolescent and Young Adult Development Study (PADS+) University of Cambridge Sidgwick Avenue Cambridge CB3 9DA 01223 767177