AppVee is currently offering rotation under the Sponsored App slot on the front page of the site, absolutely free, to app developers. What's the catch? Simple! All you need to do is put the following text at the top of your iTunes App Store description page for your app, then [email] us with the link to your application and a 100x100 advertisement image.

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VISIT APPVEE.COM - THE DEFINITIVE SOURCE FOR iPHONE APP REVIEWS
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As soon as we verify, we will put your app advertisement in the front page rotation on AppVee. This is currently a trial concept. If this text is removed from the description, or we end this promotion offer, your ad will be removed from the rotation. If we do decide to end the ad program, we will contact you to remove our text. All in all, we want this to be a mutually beneficial experiment and we look forward to you getting involved!