Continuing the expansion of Colin Theriot's list of "freebies that always work" (as he listed in a post on the Facebook Cult of Copy group last week), what we're looking at today is the Diagnosis - a detailed analysis of a problem many people have.
This is particularly useful in one specific situation that I like to call the un-problem. An un-problem is a problem you don't even know you have until someone tells you how to fix it. In the most extreme cases, you still don't know you have the problem until it has actually been fixed.
As you might guess, this can be kind of a hard sell.