[pavelkaroukin]

And it is funny - AJAX-related technologies were promoted exactly to make sites more lightweight and more responsive..

[bergie]

You could argue that Twitter is more responsive than it would be using server-generated HTML pages. But the initial app download is much bigger than it would be with that method.

[5l]

What Twitter seem blissfully unaware of is that they've traded download speed for rendering speed on lower end devices.