Here at EnlightWorks Web, we design websites for really small businesses and Entrepreneurs based in the San Francisco Bay Area and across the nation. We came across this great article written by Eilene Zimmerman from the New York Time Small Business Guide that discusses how the need or the use of traditional business plans have changed. The article provides several examples of how with today's startups, business plans are not necessarily needed to start a business. The article gives examples of how tech startups do not really use business plans because they may follow the "Lean Startup" model which focuses on building a Minimum Viable Product and getting customer feedback as a first step to building a business. Other non tech startups may just develop a short version of a startup plan since the traditional business plan maybe needed only for bank loans or SBA loans.
To read more about this, please see the following New York Times article from Eilene Zimmerman: