http://www.newsweek.com/tumblr-deleted-apple-child-sex-exploitation-app-store-ios-microblogging-1226989

Tumblr was removed from Apple's iOS App Store last week over issues related to "child sexual exploitation" being posted on the microblogging network. 

The Yahoo-owned social media network had initially claimed the company was "working to resolve the issue with the iOS app," but Download.com approached Tumblr with the child pornography presence and a new statement was issued by Tumblr. The app was first removed from the Apple App Store on November 16.