Business plans are a waste of time for the most part.
How do you know whats going to happen, before you make your first sale? You don't.
You need an idea of what you are going to do, a plan, but everything in business changes so fast, so the business you start may not be the business you have 2 months from now, especially with the interweb businesses.
I love to see guys who have 5 year projections. Always brings a smile to my face.