The Ticker: Taliban responds to Obama; Wikipedia experts; Newspaper circs increase; Twitter filter; Instagram Snap

Christian Science Monitor: With blast, Taliban respond to Obama: ‘You need to focus on leaving’

The Atlantic: Wikipedia and the Shifting Definition of ‘Expert’

NYT Media Decoder blog: Small Gain in Newspaper Circulations, Aided by Digital Subscriptions

GigaOm: Twitter’s big problem: It still needs better filters Discover Instagram Snap, a New Instagram Tool [Video above]