It is actually 40% bigger than Reddit. http://i.imgur.com/jiHka.png

This was posted yesterday by KeyserSosa ( http://www.reddit.com/r/blog/comments/d8d1f/dear_entire_main... )

And it is noticeable in the constant decrease in quality of both submissions and comments. Just compare the scribb.ly discussion here to the one on reddit: http://www.reddit.com/r/programming/comments/d8ph4/building_...

Granted, one can circumvent a lot of nonsense on reddit by carefully selecting and managing subreddit subscriptions but in the end I find myself unsubscribing from more and more reddits over time.

So first of all, I see alexa as pretty suspect. I have some doubts about this overall, although I would not be surprised if digg traffic had steadily declined over the last 3 years (testament to the not-so-amazing bizdev team there). But mostly I'd guess Kevin misspoke.