No, it is not an app in which carrier sales staff are kicked repeatedly in the head. That would violate Marketplace rules.
Retail Insider is a Windows Phone 7 app which helps carrier retail staff sell Windows Phones, giving them sales pitches, device specs, demonstration videos and FAQs.
The app will also give access to contests which would help motivate carrier staff to move those Windows Phones.
While the app is a good idea, this is one app which may be much more useful if released on the iPhone and Android Market also.
If you are an unpaid salesman for Windows Phone 7, as many of our readers are, you may also find the app useful, and can find it in Marketplace here.