My main tips for this method: 1) High quality theme (I went with Thrive Themes) for good conversion rate 2) EPIC content - dig into Amazon reviews and see what people find important about the product (size, price, features, whatever) 3) Proper research - are there enough forums? Do people actually buy these things (review count shows this)? And go for $200+ products. 4) Forum replies should be SUPER high-quality. Answer as a true expert and put more than 10 mins in per post. If possible, have a rotation of multiple profiles at each forum.