My 3 months of mining back in the day (aka heating my apartment with video cards instead of electric heaters) netted me about $4000 a few months ago. I found it hilarious.
The winter of 2016/2017 was really bad here in Portland and caused an unbelievable amount of damage to our roads. Whole portions of streets came up from the freeze/thaw. It was nuts and they're STILL in the process of fixing them, not that the roads in Portland proper were ever that great in the first place.
The more RAM you have, the more your OS will use. My 16GB laptop is currently using 8-9GB and I don't have much open. What's the point of RAM if you don't use it? If I get low on free RAM, but OS will discard some unneeded stuff but otherwise it properly uses it as a cache.
The ~600 person distributed company I work for doesn't use phone or email and obviously doesn't do anything face to face. We relied on IRC for years before switching to Slack so yes, all of our real-time communication is via Slack. We have internal blogs for threaded important async discussion though, but Slack is where our high bandwidth talk done.
I still agree that Facebook is larger though.