The latest ‘SEO Book’ blog post is titled “Gray Hat Search Engineering”.

Aaron Wall says, “Almost anyone in internet marketing who has spent a couple months in the game has seen some “shocking” case study where changing the color of a button increased sales 183% or such. In many cases such changes only happen when the original site had not had any focus on conversion at all.

Google, on the other hand, has billions of daily searches and is constantly testing ways to increase yield:

The company was considering adding another sponsored link to its search results, and they were going to do a 30-day A/B test to see what the resulting change would be. As it turns out, the change brought massive returns. Advertising revenues from those users who saw more ads doubled in the first 30 days”.

Gray Hat Search Engineering

‘SEO Book’ Blog

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