How long is a piece of string.<p>Read definitions of a startup and then formulate your own opinion.<p>Heres one to get you started. By Eric Ries.<p><a href="http://www.startuplessonslearned.com/2010/06/what-is-startup.html" rel="nofollow">http://www.startuplessonslearned.com/2010/06/what-is-startup...</a>