Finding blogs in your niche worth commenting on is likely an easy task, but Kirlew says it's the persistent effort that counts. Block out time each day to contribute to the discussion and you will end up with inbound links, possible guest bloggers and an influx of traffic. You can even go so far as to outline your linking goals with a spreadsheet and track your daily progress. That way you'll have a visible record of the "ROI" of your efforts.