Participant-initiated communications. Our website offers participants a ‘Contact Us’ button. From June 2012 to December 2013, we received 579 emails from participants. Few support requests derived from the return of genome data (3.6% of all emails, representing 11% of participants receiving genome data). Most of these were inquiries regarding data formats and additional files for the participants’ own analyses of their data (2.9%), rather than requests for additional interpretation on our part (0.7%).