Not OP but I'll hazard a guess it looks for URLs which appear at an accelerating rate on Twitter, using a whitelist of domain sources (since we see several frequent domains).
One feedback is I'd avoid the animation effect until the user has been idle for a few seconds.
Excellent idea about waiting for idle to update ratings. I thought a lot about how to prevent changes while user scrolling the list. At this moment user have a pause button, to do it manually, but your suggestion looks more useful. Thanks!
One feedback is I'd avoid the animation effect until the user has been idle for a few seconds.