Kramlich describes his work in human terms: "It's all about communication and bringing people together, allowing them to talk on their terms. That's huge. You shouldn't need 30GB of RAM to run all your chat clients. Communications run on network effects.
"If the majority of your friends use a tool and you don’t like it, your friends will have to take an extra step to include you in the conversation. That forces people to choose between their friends and the tools that suit them best."
8/
I agree with him about network effects and I want to add something here about switching costs. You might join an messaging service because of network effects (you want to talk to the users who are already there), but you *stay* because of switching costs.
If you quit a service, you quit the friends who use it. If those friends matter a lot to you, then the service operator can do pretty terrible things to you (like invading your privacy) and you'll still stick around.
9/