John Lemp started his own lawn-mowing business at the age of 14 before building websites and a search engine called Gatewaytothenet -- and he hasn't slowed down since.
In the early 2000s, Lemp created a marketplace where visitors could share instructional videos and build community sites. This eventually lead to his biggest success, or his “baby,” Clickbooth, which outsources monetization via social or affiliate marketing.