I have three somewhat active twitter accounts, which I guess makes me a counter to some of the more dismissive points of view here

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Work me (data science); cycling / music / art me; and political me.
There’s a bit of overlap, e.g. William Gibson.
The political one started as the social one, but cycling bleeds into road safety and green and around brexit it got a bit full on. I’ve left it political, because it gives me a chance to vent, to grink my MP and Southern Rail in public, and to hear from interesting people (Russ in Cheshire, Ian Dunt etc). I can also ignore it from time to time, which is more healthy.
The other two, as noted above, will have some politics (I find some of the women and queer tech people to give a really helpful counter to the techbro side of work) but that doesn’t mean I have to jump in or seek out more of that.
Mostly it’s a positive in my life.
I’ve yet to get the same from e.g. Instagram. I’ve got a mastodon account, but it is a bit geeky at the front door and I’ve yet to find the people that will make it sticky for me. Maybe that will be easier this week.