Would anyone use a service that tells you where discussion is going on for any given article? I use HN exclusively for the most elevated discussion of most arti

Would anyone use a service that tells you where discussion is going on for any given article? I use HN exclusively for the most elevated discussion of most articles I read. However often times HN hasn't linked it, or there is no discussion on the linked article. Where else is discussion going on? Reddit? Disqus? The articles comment section? Facebook? Slashdot? Wouldn't it be cool to see where discussion is happening for the article you've just read, and then choose where you'd like to engage? Worth building this service? Like an inverse Disqus.