[mygo]

I don’t think that facebook facilitates this well. Since you have to go out of your way to find a discussion there. And there is no “right now” feeling if you do find a relevant discussion. But here I just visited the home page of what I consider a general newsfeed and we’re talking to their new owners.

[wccrawford]

If you join a Facebook group about a particular thing, you'll find plenty of discussion about that thing.

And when something is big enough news, it makes it to the top-10 news thing on the right-hand side of Facebook.