Further to the above, I've just looked on the GR message boards, and people there are complaining that they are getting Hot Matches enquiries as if they had initiated the contact. The conclusion was that people read the e-mail from Genes Reunited as though others had initiated these matches, and not that Genes Reunited had just run a matching program.
Interestingly, looking back over ours, we've had a few hot matches responses which suggested we'd initiated the contact.
Only thing I can suggest is raising this with Genes Reunited - suggesting they make the process clearer in the notification e-mails, or they have a FAQ on Hot Matches.
JULIAN