Apple to developers: Do NOT manipulate your Apps rankings

Lately, Apple has warned app developers not to manipulate their rankings in the top charts by using third-party marketing services that uses fake users write good reviews.

The warning addresses rumors that "bot farms" or "water armies" in places such as China are offering to boost apps into the top 25 by using a mob of fake users to download an app and give it positive reviews in exchange for money.

Apple Stated on an Email to the Developers, "Once you build a great app, you want everyone to know about it. However, when you promote your app, you should avoid using services that advertise or guarantee top placement in App Store charts. Even if you are not personally engaged in manipulating App Store chart rankings or user reviews, employing services that do so on your behalf may result in the loss of your Apple Developer Program membership."