In my city, the local Hearst rag often doesn't report on things that the city administration doesn't want published. For example, a city employee was indicted for killing a girl and burying her body on city property (probably while on the clock) and was on "paid suspension" (i.e. On payroll, not working) for two years. Awkward situation for the mayor.
The arrest happened on a Friday night. The story? Page 4, section B on Monday.
In a story like this Wikileaks thing, the context is missing. How are these things used? To what end? Snowden tried to provide that context.