Developer pulls leading ad-blocking app from Apple Store

Tumblr co-founder Marco Arment, who developed the most popular paid ad-blocker on Apple Inc's U.S. app store, has pulled the product, citing concerns that the tool could hurt independent Web publishers. In a blog post on Friday, Arment, wrote on the social media site that he was pulling his "Peace" app because he does not feel that it is his role to decide what content is blocked. "Adblockers come with an important asterisk: while they do benefit a ton of people in major ways, they also hurt som