Technology Review article talks about PubSubHubbub, Salmon

[John Panzer]

It's a good article, worth referencing:  http://www.technologyreview.com/web/23968/page1/

What's more, people are increasingly likely to discuss and interact with content away from the site where it was originally posted. Grigorik studied 1,000 of the feeds his company has monitored for the past three years and found that about 60 percent of the interactions PostRank recorded happened on sites other than where the content was originally posted. "As a publisher or blogger, I want to see these conversations," he says.

(emphasis mine).  There's also a good clear description of how the protocol works end-to-end:

 

For the Salmon protocol to work properly, it would need to be adopted by both publishers of content and services that might subscribe to or discuss that content. When a post appears, the publisher uses pubsubhubbub to notify the subscribers that it's present. Then, if a user makes a comment about the post on another site, the Salmon protocol sends this information back to the publisher. The publisher can in turn pass this comment downstream to all the other subscribers, keeping the conversation unified wherever it occurs. 

--
John Panzer / Google
jpa...@google.com / abstractioneer.org / @jpanzer

[igrigorik]

Hey John, tried to ping you on email but have a feeling it may have
hit the spam filter. Have some ideas around deploying Salmon (within
and outside of PostRank), would love to chat. Ping me on: ilya at
postrank.com.

ig

On Nov 23, 4:07 pm, John Panzer <jpan...@google.com> wrote:
> It's a good article, worth referencing:http://www.technologyreview.com/web/23968/page1/
>
> What's more, people are increasingly likely to discuss and interact with
>
> > content away from the site where it was originally posted. Grigorik studied
> > 1,000 of the feeds his company has monitored for the past three years and

> > found that *about 60 percent of the interactions PostRank recorded
> > happened on sites other than where the content was originally posted*. "As

> > a publisher or blogger, I want to see these conversations," he says.
>
> (emphasis mine).  There's also a good clear description of how the protocol
> works end-to-end:
>
> > For the Salmon protocol to work properly, it would need to be adopted by
> > both publishers of content and services that might subscribe to or discuss
> > that content. When a post appears, the publisher uses pubsubhubbub to notify
> > the subscribers that it's present. Then, if a user makes a comment about the
> > post on another site, the Salmon protocol sends this information back to the
> > publisher. The publisher can in turn pass this comment downstream to all the
> > other subscribers, keeping the conversation unified wherever it occurs.
>
> --
> John Panzer / Google

> jpan...@google.com / abstractioneer.org / @jpanzer