I also saw Arc's previews, and thought the same thing :) Yes we are relying on OpenGraph, Oembed (and scraping in some cases). I was very happy to see Arc's re

I also saw Arc's previews, and thought the same thing :) Yes we are relying on OpenGraph, Oembed (and scraping in some cases). I was very happy to see Arc's release, as it brings awareness to this functionality! I wish this translated to Google traffic :)