Is Periscope the lunch-sharing social network Twitter always threatened to be?

Twitter's new video app is brilliant technology in a lush package - what a shame our lives are all so boring

In November 2009, Twitter made a small, seemingly cosmetic, change to its web interface. For two years, ever since the site was still called "twttr", the box for composing a new tweet had posed the question "what are you doing?"

But seeing how the site was actually being used, Twitter changed its mind. The new question was "What's happening?" That paved the way for the modern era of social networks - but it's something that Twitter's new app, Periscope, might find hard to emulate.