It would be interesting to know what yahoo properties are drawing people. We'll have to wait and see if this quarter's financials match this ranking. The conspiracy theorist in me thinks that tumblr is being double counted somewhere.
> Postscript: Right after this posted a few people tweeted that this new top ranking is based on Yahoo’s Tumblr acquisition. While the first chart suggests in a footnote not reproduced above, that some portion of Tumblr traffic has been assigned to “other sites,” it’s still ranked separately at #28 above, with 38.3 million uniques.
> The Yahoo and Tumblr traffic figures have not been combined (or entirely combined) by comScore. It’s possible that some “assignment” of a part of Tumblr traffic to Yahoo is responsible for the boost. However that’s not clear at the moment.
[1] PDF @ http://www.comscore.com/content/download/20239/1035515/file/...