The app, called Installer, has been around for a while and was originally created to install applications directly from your jailbroken iPhone or iPod Touch desktop. Rip Dev recently upgraded that long popular application to version 4.1. However, a new version for the desktop might steal the show by allowing the installation of third-party applications over USB straight from your desktop — almost a guarantee of new venues for jailbroken application sales.

via iPhone App installs over USB: Another threat to iTunes App Store? – News – Mobile Phones.