Hacker News Reader

That's an issue with regular bittorrent too, yet it's still there, even when most of the users have asimmetric bandwidth.

A good use case for webtorrent is streaming, where the user will keep the webpage open for enough time to contribute at least few megabytes.

I agree. Only thing I've ever used webtorrent for is quickly sending files to other people, which it excels at. Much easier than properly setting up a torrent, stuff like instant.io is really easy for other people to work with too.

It could be that just by browsing your website, your visitors start seeding from localStorage/IndexedDB. Most clones only use memory but you can certainly persist chunks if you'd like to.