Oh haha, I hadn't thought about andrewids in your day being only 4 characters (duh!) Yeah, they're still limited to 8.
We have used many different chat systems, but we've had one (persistent) chat per puzzle for a number of years now. We had a couple of different homebrewed custom systems back on Sages, then as Rage we tried Zulip our first year, then a homebrew system I wrote last year, and Slack this year.
Slack was really solid and we plan to stick with it.
We yell at people over and over to never use the google spreadsheets chat. This year with Slack people finally mostly listened.
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We have used many different chat systems, but we've had one (persistent) chat per puzzle for a number of years now. We had a couple of different homebrewed custom systems back on Sages, then as Rage we tried Zulip our first year, then a homebrew system I wrote last year, and Slack this year.
Slack was really solid and we plan to stick with it.
We yell at people over and over to never use the google spreadsheets chat. This year with Slack people finally mostly listened.