Why Marketing Programs Fail—Encore

A few days ago I wrote a post asking for your ideas on why marketing programs fail. We had a lively discussion here at tompeters.com, plus many of you clicked on the above link and filled out the form on my website. As we can see quickly, most of us don't think that the key to great marketing is a catchy tagline or "breakthrough creative."

Let's keep the discussion going! What is it, in your experience, that makes marketing programs succeed ... or fail?