I segment my interactions in this way. I have different contacts on Facebook and WhatsApp. I don't use the Facebook mobile app partly because I don't want my co

I segment my interactions in this way. I have different contacts on Facebook and WhatsApp. I don't use the Facebook mobile app partly because I don't want my contacts from Facebook to annoy me anywhere, expecting me to respond on my phone any time of the day. But I'm okay with ignoring people, asking people to stop, and mercilessly blocking people when they don't. Some are unwilling to take such deliberate action to reduce unwanted communications. Some perhaps have good reasons: it'll be socially costly.