https://blog.wongcw.com/2018/12/07/%e8%b0%b7%e6%ad%8c%ef%bc%9a%e6%98%8e%e5%b9%b43%e6%9c%88%e6%ad%a3%e5%bc%8f%e9%97%9c%e9%96%89allo-%e4%bb%8a%e5%be%8c%e9%87%8d%e5%bf%83%e6%94%be%e5%9c%a8hangouts-meet-chat%e4%b8%8a/
谷歌:明年3月正式關閉Allo 今後重心放在Hangouts Meet/Chat上