Return on Investment information is imperative for the following reasons: It allows you to see success and failure in tangiable ways It allows you to conduct a comparison between money invested in marketing and the actual return in terms of sales and sales leads. It becomes a useful tool and resource for corporate presentations and provides jusification (or not ) for future marketing investments/budgets. I have always produced quartely ROI reports. Here are two examples of such: ROI: Q1 2001 (Adobe Acrobat format) ROI: Q2 2001 (Adobe Acrobat format)