This is one of the things we've struggled with the most. We're huge fans of customer development, but also started a company with a vision. Ultimately, I think part of it comes down to your motivations for starting the company and what you hope to accomplish.<p>[Shameless plug] You can read more about our battles with this exact issue here:<p><a href="http://mightybrand.com/2010/01/got-customers-part-2-the-one-in-which-we-save-the-startup-but-lose-our-souls/" rel="nofollow">http://mightybrand.com/2010/01/got-customers-part-2-the-one-...</a>