Neilsen has released their comprehensive list including the unsurprising leader, Google, and other savvy brand like Apple, Wikipedia, Facebook and Microsoft.
As 2011 comes to a close, Nielsen reviewed the top online destinations, social media sites, and smartphone devices. Google was the most-visited U.S. Web brand, while Facebook held its lead among social networks and blogs. Smartphones were popular in 2011, making up the majority of new phone purchases with Apple as the top smartphone manufacturer and Android as the leading OS. Nielsen Wire