From the article I found this graph interesting http://gigaom.files.wordpress.com/2008/05/xobni_mail_client_.. http://gigaom.files.wordpress.com/2008/05/xobni_m

From the article I found this graph interesting http://gigaom.files.wordpress.com/2008/05/xobni_mail_client_.. http://gigaom.files.wordpress.com/2008/05/xobni_mail_client_.... Outlook 400 M - Lotus 250 M - Yahoo Mail 260 M - Hotmail 200 - Gmail 100 - Apple Mail 50 M - Thunderbird 30 M This totals 1290 M , now if their market penetration is 0.5% (i.e. 0.05) and they sell the product for 1 dollar that's 60 million in revenue Lets try another what if. What if they sell it for 20 dollars, how much market penetration to they need to make 100 Mil revenue! ~0.39% (0.0039) I am guessing they played a math game. And the math says, unless they totally suck, they will pass that 20 million sooner than spending 20 million Finally we meet some business men in the startup software market pick your market, before you pick your product