Angel: Eric Ries

Overview: A Silicon Valley entrepreneur and author recognized for pioneering the “Lean Startup” movement, a new-business strategy which directs startup companies to allocate their resources as efficiently as possible. He is also a well-known blogger within the technology entrepreneur community, angel investor, and startup advisor. 

Invested in: 500 Startups (Fund), Gaston Labs, SendHub, Tout, Unbounce, Votizen

Pros: A brand name, failed but learned from it, great at turning vision into action

Cons: Invests in small amounts at seed level, more of an advisor than true angel investor

"Eric has taught me the most out of any person I’ve met in Silicon Valley. He continues to push the art of entrepreneurship and if you’re lucky enough to get 5 minutes talking with him, you’ll know exactly what I mean."— Founder of a company Eric advised