This is a fantastic way of illustrating how a tiny transaction fee from a huge subscriber base can make lots of revenue. Admittedly most apps are free but even then, the revenue from the ads page impressions can be significant if its a big enough seller. And if you hit upon that killer app that you can charge for, just sit back and rake in the money. </p> <span style="border-collapse: separate; color: #000000; font-family: 'Times New Roman'; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px" class="Apple-style-span"><span style="border-collapse: collapse; font-family: arial; font-size: 13px" class="Apple-style-span"><u><font face="Arial" color="#0000ff" size="2" /></u></span></span>http://www.youtube.com/watch?v=T2IMHuZXfl0</p> </p> </p>