In order to build a great company, you have to be absolutely crystal-clear about the goal you are trying to accomplish. For startups, that goal must be to create a rapid-iteration feedback loop that enables you to learn what customers want and will eventually pay for. Everything else, including anything that optimizes any other goal, is waste.
In developing OnePage, I am completely convinced that metrics and data driven product and customer development will be a key factor in our success. By using metrics and having a tight feedback loop with our customers, we can avoid waste in terms of our development time. Get in touch if you want to chat further about how this is done, as I thoroughly enjoy discussing these topics.
The above quote is by Eric Ries in his article Throwing away working code.