Turns out twitch has an API that is 1000000 times faster than their website!

Demo: http://asafgartner.github.io/twitch_panel

Usage

1. Edit the twitchUsers variable in index.html.
2. Open index.html in a browser.

Features

1. List past broadcasts (updates automatically every 2 hours).
2. LIVE indicator (updates automatically every 1 minute).