I desperately want some annotation service/standard to succeed. The idea goes as at least far back as 1993! (https://en.wikipedia.org/wiki/Web_annotation) Discussion is too important to be subject to the editorial whims to the host of the content it is discussing. I'd love to take the insight of the Hacker News community (for example) everywhere I go on the web.
There's a chrome extension for that: https://chrome.google.com/webstore/detail/what-hacker-news-s...
Also available for Firefox!
https://addons.mozilla.org/en-US/firefox/addon/what-hacker-n...
Source code: