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Original comment:
There's also https://twitter.com/YourAnonCentral/status/15727650099729899... (via https://news.ycombinator.com/item?id=32937397, but we merged that thread hither).
It's clear that accounts are having trouble communicating but the various tweets on this seem to have conflicting explanations about who is doing it. Is this known?
Edit: the OP editorialized the title, which is against the site guidelines (please see https://news.ycombinator.com/newsguidelines.html). We've changed it now to what the tweet actually says—which is agnostic on the above point.
Submitted title was "WhatsApp has disabled communication between accounts from Iran during protests".) Submitters: Please don't do that! It has an enormous impact on threads, as it did here, and usually a very bad one.