go to this page: http://www.pheromonetalk.com/introductions-new-users-say-hello-get/
and press the red “new thread” button in the top left corner to start a new thread, and get the 15$ cupon 
EDIT
actually you have already started a new thread here: Hi there from the UK - On a search for good gay products :) and recieved the 15$ cupon