“The overall volume of Internet traffic served during the NAG LAN at rAge 2013 was 26TB, which consisted of 21.3TB downloaded, and 4.6TB uploaded,” said Parker.

“We are still awaiting the final breakdown of traffic, but loosely, the top sites included: Steam, Microsoft Update, YouTube, and local gaming servers.”
Those numbers (for 3 days only) are staggering! Did they all decide to download all the games ever wanted from Steam?

Enter LAN just to update computer and download all the games bought from the last year's worth of Steam sales? It sure looks like it