No comparison -- I wouldn't buy that either. Just saying they're an eyeball property, with a somewhat moderate write load all things considered. Many billions of page views versus their ~millions DAUs is my gut feeling there, since there are probably far more people reading threads off of Akamai than interacting.

Little bit (somewhat outdated) here: http://highscalability.com/blog/2013/8/26/reddit-lessons-lea...

Facebook is recording screen movement and a variety of other logging that reddit wouldn't be recording.

User actions like upvoting vs liking per user probably falls in reddits favor but the content being shared on facebook is much larger in size.

Reddit doesn't let people upload videos and pictures to their site. You have to post pictures and videos on other people sites and then link to them. Sort of the same thing with Netflix. Netflix doesn't have a bunch of people uploading stuff to their servers all the time.