His Telegram channel is somewhat odd. It's a mix of what you'd expect (updates / general stuff about Telegram), some slightly weird stuff (highly praising countries he visited or talking about his oh-so-high-quality sperm and how he's the biological father of "over 100" kids), and then there's just shilling for some random watch-ads-to-get-coins things or whatever that totally aren't scams built on Telegram's new mini-app thing and TON (which is Telegram's cryptocurrency that they can't legally sell as theirs). You can take a look for yourself here: https://t.me/s/durov