Small groups are the new social networks. The next counter-cycle to the giant island of Facebook and Twitter will be an archipelago of different groups, one for each niche and community.
If you grew up without the Internet, sharing your location might seem weird. Using an app that looks like a Warhol painting might seem weird. But if you grow up never knowing a time before YouTube, you might find yourself with different preferences.
What’s a messaging experience that’s even more engaging than WhatsApp? An obvious improvement would be speed. WhatsApp is pretty responsive, but maybe you can make it even faster. What else?