> But sources close to [Apple] say it was more than a little troubled that AppGratis was pushing a business model that appeared to favor developers with the financial means to pay for exposure.
http://allthingsd.com/20130408/confirmed-apple-kicks-appgrat...
That's the closest thing I can find to a "confirmation" that AppGratis was accepting cash in exchange for a higher rank in their app. They didn't confirm or deny that in their "Here's the Full Story" blog post, nor does it say anything about their business model on their website.
In any case, that supposedly has nothing to do with the two official reasons for which they were most recently banned. First is 2.25:
> Apps that display Apps other than your own for purchase or promotion in a manner similar to or confusing with the App Store will be rejected.
But they had encountered that problem before and cleared it with Apple. So the only new one is 5.6:
> Apps cannot use Push Notifications to send advertising, promotions, or direct marketing of any kind.
Seems a little odd to remove an app with 12 million users over such a minor detail when it could be resolved in a few seconds -- just remove push notifications. Does Apple ever give official responses on these issues?