Ambi-social — These folks use many chat networks, have 5+ chat apps on their phone, need to keep track of which friends are on which network so they know how to contact them. Instead of creating a new siloed chat app, they enabled developers to write ‘bridges’ between Matrix and other chat networks, like Whatsapp, Telegram, Discord, Skype and even more obscure networks like Keybase. Now, instead of keeping 5+ different chat apps open, you can use just one app (Matrix) and talk to friends on their preferred chat network.