Ask HN: Do you use Twine?

I was wondering how many people on here use Twine. I signed up some time ago, poked around, subscribed to some twines, but have not posted. I find much of the content to be Semantic Web-oriented (understandable), but I also can't quite figure out what makes it different from a link-sharing site (i.e. HN).

In my attempt to investigate I came across an interesting interview with Nova Spivack, the founder of Radar Networks / Twine, here:

http://www.fastcompany.com/blog/kermit-pattison/fast-talk/twine-binds-qa-nova-spivack

It definitely helped to clarify the [stated] purpose of Twine. Yet, in spite of all of Twine's special semweb abilities I learned about, going back to the site I can't quite seem to understand,what makes it more than a link-sharing site.

Can you please enlighten me? Am I missing something major? I'm really curious, because the interview (and the idea of the semantic web) are really interesting, but I can't quite seem to connect the ideas to the actual site. Thanks!