JoelComm Articles on TUAW - The Unofficial Apple Weblog

App Store rules changed to allow sweepstakes and contests

by Michael Rose (Feb 19th, 2010)

The prospect of an always-on, portable and discreet e-lottery ticket in your pocket may thrill some and horrify others, but as far as Apple is concerned it looks like it's A-OK for the App Store. We were first tipped to a change in the iPhone developer agreement this past Monday by Joel Comm, the ...

Rank and sales data could help figure out App Store popularity algorithm

by Robert Palmer (Dec 20th, 2008)

Joel Comm, publisher of the highly-useful app iFart Mobile, has published some data about how sales related to popularity in the App Store. While I have only a high-school understanding of statistics, it would appear from Comm's data that as sales rise in a linear fashion, App Store ranking ...