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WhatsApp seems set on introducing ads, but they won't appear in your inbox
(www.androidpolice.com)
This is a most excellent place for technology news and articles.
Signal is this weird middle ground. I would prefer it if the person already has it. But if I am to try convincing someone to at least try another messaging solution, I would rather lead them to XMPP.
Also having to use either signal-cli or Waydroid is VERY annoying, because they arbitrarily decided to screw desktop over.