Gabriel Weinberg is the founder and CEO of DuckDuckGo, the search engine that doesn’t track you with over three billion searches in 2015. 
Previously he was the cofounder and CEO of Opobox, which was sold for $10 million. Weinberg resides in Valley Forge, PA and on twitter @yegg. He is author of Traction: How Any Startup Can Achieve Explosive Customer Growth being re-released today. And a suggestion, this book is just not for start-ups.
New Accessibility for the Business901 Podcast
CAP-Do (More Info): What makes CAP-Do so attractive is that it assumes we do not have the answers. It allows us to create a systematic way to address the problems (pain) or opportunities (gain) from the use of our products and services.
Lean Marketing eBooks (More Info): Excerpt from the Lean Marketing House