LiveComment is missing link in the Evolution of the Web (what is that)

What is it supposed to do?

Here is the showcase.

I just add your question and answer to [LiveComment Demo](http://acpul.org/livecomment) for future use when that topic is going down. Just expand FAQ.

Because thanks by your question.

I just select block '# What is it supposed to do? []', copy-paste text and push changes to git.

[link to reddit](https://www.reddit.com/r/javascript/comments/4efk6j/livecomment_is_missing_link_in_the_evolution_of/)