Collective wisdom.

The article presents advice and details from several entrepreneurs on how they created their businesses. Topics include Dennis Crowley's, the chief executive officer (CEO) of location-based social networking website Foursquare, advice to follow one's heart, Rick Alden's, the founder of headphone product marketer Skullcandy, focus on revenue from a simple product, Sheila Johnson's, the CEO of Salamander Hotel and Resorts, focus on the team environment within a business, and Christine Day's, the CEO of healthful-lifestyle food brand Luvo, advice to create new market shifts.