[insteadof]

Must have been updated since as they posted at the bottom of the post,

"What makes repositories or developers trend? We look at a variety of data points including stars, forks, commits, follows, and pageviews, weighting them appropriately. It's not just about total numbers, but also how recently the events happened."

[mindcrime]

Aaah, I see. Not sure if the page was updated, or if I overlooked that bit. But at any rate, it's good to know. I mean, I assumed it was something like that, but it's nice to get some clarity.