There is a disincentive to using a more generic subject and broadcasting out-of-context on Subjot, which is that people unfollow you.

I saw one user doing that in our private beta and I unfollowed him, since the entire premise of Subjot is having a feed of stuff that is interesting. We have a very unfollow friendly culture, so it's not a faux pas to unfollow a subject that you don't find interesting.

It is not a one size fits all solution but it has been working for us. Just like you wish you could unfollow your friend who live tweets the entire episode of Gossip Girls, on Subjot you can easily unfollow specific aspects including a broadcast subject.