Update August 2011: Have made available publicly, the code for my simple feedback form with Google Analytics integration.
Update November 2010: Made a note about tracking visitor comments in Analytics and how I’m testing it.
Update: Removed “Maybe” response with 0.5 score as Analytics only supports passing integers.
Sometimes your goal is not to optimise for revenue, but for the ability of your website to solve people’s problems. The issue is, there’s no website metric which tells you how much a page fulfills this goal. There’s no “Solve Rate” for your content in Google Analytics.
That is why I built a feedback tool into Google Analytics (OK, OK, I’m no web designer):
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