Not surprisingly, the report found Facebook ranked fourth and Amazon ( AMZN) came in sixth. I'm willing to applaud Yahoo!'s numbers from the standpoint that they do not include Tumblr, which Yahoo! acquired earlier this year for more than $1 billion. Tumblr, which has grown in popularity, came in at number 28, two spots ahead of Twitter and eight spots ahead of Netflix ( NFLX). Essentially, there's a lot that goes into being ranked on this list, not the least of which is it doesn't include mobile traffic -- something for which Yahoo! has long been criticized. On the flip side, it means Yahoo! can instantly become dominant should it ever figure out its mobile strategy. I'm curious to see how Yahoo! is able to monetize its new status. Follow @saintssense This article was written by an independent contributor, separate from TheStreet's regular news coverage.