And then you reach 10, and you know that you're on the right path! Should have a look at this great article from Jason Lemkin: <a href="http://saastr.com/2013/01/09/if-you-have-10-unaffiliated-customers-in-saas-you-have-something/" rel="nofollow">http://saastr.com/2013/01/09/if-you-have-10-unaffiliated-cus...</a>