The staff at Cision has come out with their top 100 blogs in the U.S. using 4 metrics from compete.com. Here is a screen shot from their blog of the top 100 blogs. Click on image link to go to their blog to have a look at the complete list.
If you are an internet marketer, I would head on over and follow each link and read up on those blogs, I'm sure there is a ton of valuable information and plenty of opportunities to learn, network and drop a link on those blogs that are in your niche. Leave some valuable information or just say hi and congratulate them for making the list.