Here's the message by Pavel Durov, CEO of Telegram:
"😝 Next month, channel owners on Telegram can start receiving financial rewards from their work.
Broadcast channels on Telegram generate 1 trillion views monthly. Currently, only 10% of these views are monetized with Telegram Ads (https://promote.telegram.org/) — a promotion tool designed with privacy (https://t.me/durov/203) in mind.
In March, the Telegram Ad Platform will officially open to all advertisers in nearly a hundred new countries. Channel owners…
Just some short textual post in very large channels (> 50k subscriptors, IIRC).
They are there in smaller channels as well - my wife has about 2,5k and I see ad posts from time to time. The format does not look that invasive though, just a few lines to scroll past.
Thanks for correcting me. Indeed, they’re not annoying and generally quite far an in between (for now, at last).