We do not use double optin which i guess it would be a question that a lot of people have. We ask them to addisos contact, or drag us to the primary or up dates tab if thy're using gmal. The key thing that we've changed in the past year or so is asking for a reply. And essentially what we say there is, like a year new here. But essentially it gets people to know you better. They tell you more about what they do,. aside from ike our survey, where we ask people to tell us what they do, or morly, on the thank you page.