Essentially you are reading the article and the comments .... and as you are reading .... you get a popup in the bottom right corner with hyperlinks to the latest *NESTED* comments.
It certainly inspires flame wars: ie. the usual arguments @ CNET: Apple fanboys vs. Android Lovers.
It can be fun reading the comments in real time.
Once you click a new comment alert ... it moves to that comment .... and the link disappears.
Anyone tried it before ? Like it ? Have you seen a better Live Comments elsewhere ?