The mobile interactive users companies are scrambling to attract can cause chaos. The spontaneous interactivity companies are trying to leverage can as easily work against them.

NBC4 Southern California is jumping on the two-screen viewing bandwagon, but with a twist. The West Coast flagship of NBC's local TV stations is rolling out a mobile technology dubbed myCode that lets viewers get special offers and discounts via a smartphone app while watching.

News Corp.'s decision to throw its publishing operations under the bus in a division of assets is a shortsighted effort to pacify shareholders disgruntled with a year-long phone-hacking scandal and declining stock price. It could blunt the newspapers' digital survival.