Libscore: View the growth of open source libraries

I'm curious about the reasoning behind including that annoying circle with a down indicator inside that appears shortly after the page loads and bounces at the bottom of the page until you first scroll that page.

It seems to serve no purpose other than to let you know that there is more data to be had by scrolling, but surely pretty much everyone who is going to see that page already has learned about scrolling. It's one of the first web browsing skills more people learn.

What technologies has been used to build Libscore?