I use DuckDuckGo, XMPP, ownCloud, Firefox with bunch of privacy enhancing extensions... My main phone is Maemo based, and I keep one with LineageOS and microG (so no Google Play Services) around as well. I access Facebook and Twitter only via webapps, with isolated wrappers like FaceSlim on mobile. Not only I feel somewhat safer about my data - battery usage, speed and user experience is so much better! Win-win :D