Startups always ask us for the secret cess. If you can build a product that is so good people spontaneously tell their friends about it, you have done 80 % of the work that you need to be a really successful start up. One important indicator for a product like that is a product that's simple to explain and easy to understand. Another thing that start ups need to look for is a market that is either started to undergo, or is soon going to undergrow,. expedential growth.