A few of the Web's most popular blogs rose significantly. For example, Huffingtonpost.com rose 10 spots, and TechCrunch.com rose 13. Surprisingly, Whitehouse.gov was a big winner, too, jumping 10 positions. Among the Web's biggest gains for root domains: Icann.org, up more than 71 spots; Co.cc, 29; Vimeo.com, 28; Etsy.com, 26; Tumblr.com, 23; and Yelp.com, 22.