Tapjoy opens up mobile ad buying marketplace

Thanks in large part to the popularity of the freemium business model amongst mobile app developers, mobile ad platform Tapjoy has built an advertising network that reaches some 70m active users each month.

Now it’s hoping to really cash in on that audience by opening up its ad buying marketplace to all advertisers.

Apple starts squeezing pay-per-install apps

The numbers leave no doubt: when it comes to buying mobile apps,
consumers feel far more comfortable handing their money over to Apple
via the App Store.

A big reason for that is Apple’s app approval
process, which, love it or hate it, arguably provides a much greater
level of quality assurance than is found in competing app stores, such
as Google’s Android Market.

But despite Apple’s often opaque approach to App Store rules, the iPhone developer ecosystem isn’t exactly squeaky clean…