Can a new app from Twitter's Biz Stone foster empathy?

Twitter co-founder Biz Stone has recently launched a new social app called Super.

All posts start with one of 11 predefined superlatives - which is where the name Super comes from.

BBC Click spoke to Mr Stone at the recent South By Southwest Festival (SXSW) in Austin, Texas about his hopes for the social platform.

More at BBC.com/Click and @BBCClick.