ROI Tracking For Pay Per Click Search Engines

How To Calculate PPC ROI - This is a formula for calculating Return on Investment for Pay-per-Click Search.

In-Depth ROI Tracking- This article explains why and how to track ROI using the GoToast Profit Builder Tool.

Pay Per Click Comparison with Free Search Listings - NEW - Which is more profitable, pay per click advertising or free search listings? This article summarizes a study performed by the IAB documenting their findings.