To put that in perspective, Flickr is at 1.5B. LinkedIn, 2.7B. Edit: I'd like to go on record with a bet that by the end of the year, reddit will get more traffic than LinkedIn (which currently has a market cap in excess of $6,000,000,000). Anyone want to bet against me? https://plus.google.com/u/1/109191382354704910211/posts/ZRiC...
It's a ridiculous metric. Certain types of sites simply get large numbers of page views due to their nature and design.
Monthly uniques, repeat visits, and average time on site are a much more reasonable basis for comparing different types of sites (and even that is quite flawed).