You can evaluate the ROI of hiring an SEO firm by projecting the revenue you'd earn from ranking well in your area, then comparing it to what the firm will charge you. The maths is simpler than most agencies make it sound, and it follows a five-step formula using data you can pull for free. This article walks through that formula so you can run the numbers for your own business before you sign anything. What ROI actually means in the context of SEO ROI stands for return on