You can measure just about every aspect of your Internet marketing, but that sometimes makes it difficult to pick out the metrics that are truly important. Instead of trying to do it all, pick a few key performance indicators, or KPIs, and monitor them regularly. If you’ve chosen the right KPIs, it will be easy to tell whether or not your marketing efforts are successful. And if you’re working with an agency, they should be willing to generate regular reports for your company using these metrics.