Great collection of tools and insights for startups to better understand their customers:
“It’s impossible to operate a business without interacting with customers and capturing their profiles, especially in the early, formative years of a company. “If you're building a web or mobile business, the way in which you interact with your customers is often via e-mail, push notifications, SMS or surveys inside or outside the product,” says Reinhardt. “The way you discover how easily they're using your product is with an analytics tool that shows you a funnel. The brick and mortar analog is a store owner standing in her store observing what's happening. It’s that fundamental.”