A major browser supporting torrents would be a disaster for public torrent culture. Since everyone closes their browsers, people would seed substantially less. I have a theory that a good chunk of people seeding any given torrent on a public tracker are doing it unintentionally.

EDIT: closes their browser is a bad way to phrase it. The problem is that the fact that they are seeding would be more in their face instead of hidden away in a notification icon on hover.

I wonder if intellectually "property" groups thought of this playing out.