My chosen family (most of the people of my bio family I kept in touch with have passed on) are very much like that, but I keep in touch with them via a mixture

My chosen family (most of the people of my bio family I kept in touch with have passed on) are very much like that, but I keep in touch with them via a mixture of IRC, gchat and twitter DMs (fascinatingly the one member of my bio family I enjoy talking to who's still here uses twitter DMs to talk to me.) The people who're local to me I catch up with in person, and regularly get "oh, yeah, you're not on facebook, I can actually tell you about this" with a huge grin and it's a big happy for me every time. I've found that for whatever reason people's twitter feeds are "stuff I've found interesting" and I catch up with them separately from that, which I've found fine. (note: this is an observation of what works for me, please don't consider this as in any was a criticism of your use of facebook if it's working for you, keeping in touch with people is awesome and "whatever works for that is good" applies)