Mozilla says it's got 18 carriers signed up for its Firefox smartphones, boosting the credibility of its new OS.
YouTube's hoping to improve the quality of its content with the acquisition of web video production startup Next New Networks. The idea is to help budding film-makers up their game.
Apple is collecting the precise, real-time location of iPhone and iPad users, and passing it on to other organisations.
China has told Google's partners in the country that they should have a backup plan in case Google shuts its services down.