best-secure-messaging-apps-shutterstock-1892950018.jpg Telegram users themselves will be able to flag and report potentially false content. 5Telegram Channel avatar size/dimensions For crypto enthusiasts, there was the “gm” app, a self-described “meme app” which only allowed users to greet each other with “gm,” or “good morning,” a common acronym thrown around on Crypto Twitter and Discord. But the gm app was shut down back in September after a hacker reportedly gained access to user data. The Channel name and bio must be no more than 255 characters long
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