Facebook IMO is a necessity for the freelance musician.
If it weren't, there isn't a chance in hell I'd have an account.
People nowadays use Facebook like they used to use the telephone. More and more people are becoming incapable of even communicating via a telephone. We see it here on Talkbass from time to time, "Why must these guys insist I call them?!?!?". I play lots of shows, with lots of different people, and it's never about exchanging numbers anymore, or handing out cards. It's about friending each other, and as much as I hate to admit it-- Facebook is pretty good for that. It can give a freelance musician lots of exposure they'd otherwise never get. If Joe Schmo has my number that's great if he should ever need a bassist. But if Joe Schmo and I are Facebook friends, anyone and everyone he ever played with gets to see who I am and what I can do if we post on each others page. It's also a lot more impersonal, which makes communication easier for less extroverted.
I also need Facebook for some classes I've been taking, and I'm going to absolutely need it in a month when I release my book who's name I'm finally ready to start putting out there,
50 Things To Do Before Seeing a Psychiatrist. Interestingly, Silencing social media is one of those 50 things, so I obviously have many more thoughts on this topic.
I think Facebook is incredibly damaging in a lot of insidious ways that most people aren't the least bit aware of. It has it's definite upside, but, yeah... too many negative aspects, and definitely not a place the anxious or depressed should be burying themselves in every day. I think that it is also dividing and destroying our society, but that's the subject of yet another book

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