For various reasons I was reminded that two years ago this week, I quit the former Twitter for good; I had been doing a slow draw down of my presence for most of 2023 but on November 16 I abandoned the place entirely, mostly decamping to Bluesky, with additional outposts at Threads and Mastodon. At my peak on Twitter I had 210,000 followers (down to about 180,000 when I pulled the plug), accrued through a dozen years of being on the service, so it was no small thing to go. But the other opt...