We are thinking of using some of these services to market our game but we are worried that they may violate clause 3.10 of the app store review guidelines. 1. Tapjoy- Pay per install, pay per engagement, click to text 2. AppFlood- non-incentivized users on cost-per-install model, and exchangers get free users 1-1. 3. Tapit! 4. InMobi 5. Flurry 6. FeaturePoints Any clarifications would be greatly appreciated.