The number of videos viewed each day on Snapchat has tripled since May to 6 billion as the messaging app closes the gap with social media giant Facebook Inc, according to a report in the Financial Times that cites people close to the company. The Financial Times said that Snapchat confirmed the 6 billion figure but had declined to comment further. Facebook said last week that it had doubled daily video views to 8 billion from 4 billion in April, according to the report, which notes that social networking groups are vying for eyeballs in the fast-growing video segment.