In addition to 1-to-1 chats and group chats, telegram has channels, which are kind of similar to twitter timelines, 1-to-many communications.

There are a large number of channels that take advantage of the 2 gig filesize limit by uploading pirated media. It's actually more convenient than torrents for most things, but it's still a hassle compared to a good usenet setup.

You can find entire seasons of animes just by doing a global search for the name of the anime. Sometimes there's even a chat attached for discussing the anime!