World view: Lord Black objects; Sue over riot info demands; teaching magazine; falling paper prices?

Time Warner's publishing ad sales slow, but CEO remains positive (CityBizList)
Conrad Black hits out at Murdoch "price war myth" (Jon Slattery)
NUJ urges media to go to court over riot material (Jon Slattery)
Collecting six covers of one issue becomes like baseball cards (Mr. Magazine)
First-half newsstand declines in more detail (Audience Development)
Financial Times app exits the app