A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. Telegram channels fall into two types: Content is editable within two days of publishing Developing social channels based on exchanging a single message isn’t exactly new, of course. Back in 2014, the “Yo” app was launched with the sole purpose of enabling users to send each other the greeting “Yo.” Unlimited number of subscribers per channel
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