A calculation of the monetary value of an investment versus its cost. The mathematical formula is: (profit minus cost) / cost. If you made $10,000 from a $1,000 effort, your return on investment (ROI) would be 0.9, or 90%. ROI is often used to evaluate business strategy, including all advertising and marketing efforts. Return on ad spend (ROAS) is a similar metric, but it focuses more on specific tactics, such as an individual ad campaign.

Building a Highly-targeted Opt in List: When Money Lies Beneath the Lists
Are you successful with your Internet business? Better yet, do you think you are successful with your online business? When most online entrepreneurs are asked with these questions, they often brush it off.

