I did a presentation at Optimera STHLM entitled Faster websites with AJAX and REST architecture. The talk are more on an architecture level, rather than about implementation details.

Slides are available as PDF here (this is an english version of what was presented).

The demo I did of the Friendly Iframe ad-loading optimization by Tobias Järlund at Aftonbladet is available at the Aftonbladet dev blog (swedish).