[godelski]

You don't ask everyone. You try to build momentum. Get the nerds, geeks, and people that like to feel like they are special for using tech. You get these people because the privacy features. They are the easy grabs. Then one by one you form groups with those people and a few outsiders. You get these people because there's no meaningful usability difference between apps. At some point you have critical mass and getting others is fairly trivial. "We're all talking over here, just come on. It is easier." You get these people because of network effect.

You can't expect everyone to switch all at once. If you really want to get people on the app you have to be smarter about how you get people there.