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Twitter locked behind login page.
(lemm.ee)
This is a most excellent place for technology news and articles.
The Brazilian government send SMS to people for alerts. It’s independent of apps, and everyone with a phone can get them.
Seems like a good solution for important warnings.
I don't use twitter, but I'll check the local utilities twitter if there is a power outage so I can learn about updates, or the local transit twitter if there are delays, things like that. SMS isn't very practical for those kinds of infrequent uses.