A Viral Marketing Program That Needs to See a Doctor I hate sites that make you register in order to read things sent by friends. What a crappy consumer experience. If you’re going to make people register to use the site, fine. But at least allow a small crack in the walled garden for friends to read articles and try your site out. Today, my friend Len Ellis sent me what looked like a really interesting article in Ad Age via the “send to a friend function.” When I clicked through the link in the email, it first made me complete a lengthy registration process, including various special offer checkboxes and subscription offers for the magazine and its newsletters. I…