The Web has been abuzz about Pinterest for a while now. There is, shall we say, a great interest in Pinterest. So much interest, it turns out, that Pinterest in all likelihood is now getting more traffic than Tumblr in the United States. And if it isn’t, it soon will.

How did we come to this conclusion? We hit as many data sources as we possibly could and made a highly educated guess, and just so you don’t think we are making this up, we’ll take you through the process.