From the BBC World Service: Canada’s competition watchdog files a lawsuit against Google, accusing it of unfairly dominating the online advertising market. They’re even asking Google to break up parts of its ad business. Australia passes a law banning kids under the age of 16 from using social media. And ’tis the season for advent calendars. But gone are the days of a small picture behind a cardboard door, because just about any type of product now helps consumers count down to Christmas.