The Glasgow Caledonian University (GCU) Social Media, MSM & Sexual Health Survey was a Scotland‐wide online survey carried out from November 2012 to February 2013. Pop‐up message blasts and/or banner adverts invited men using gay‐specific social media websites (Gaydar, Recon and Squirt), smartphone apps (Grindr and Gaydar) and Facebook to participate. In total, 1326 men completed useable questionnaires (given the nature of online surveys it is not possible to calculate a response rate).