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Privacy is Priceless, but Signal is Expensive
(signal.org)
This is a most excellent place for technology news and articles.
Also Signal cannot add RCS support, because Google Jibe servers won't allow other app than Google Messages... And you must use them because native RCS support for Android is halted for years... And you cannot install some module with RCS support yourself because of anti-Unix monolitic Android userspace architecture...
Man, there are so many things done wrong.