This and Web Components [1] in general are high on my list of technologies to learn.

[1] http://webcomponents.org/

I'm interested in Web Components, yet, I couldn't see the advantages.

The biggest advantage I see is HTML imports [1] finally providing a common bundling mechanism for HTML/CSS/JS. Custom elements can also finally get devs out of <div> hell.

[1] http://www.html5rocks.com/en/tutorials/webcomponents/imports...