According to the latest research from Nielsen, the high-profile launch of Apple’s iPhone 4S in the Fall had an enormous impact on the proportion of smartphone owners who chose an Apple iPhone.

Microsoft was the most visited Computer and Consumer Electronics brand in September 2011 with 93.8 million unique U.S. visitors, according to Nielsen’s State of the Media: Consumer Usage Report.

Nielsen looks at the top online destinations and mobile platforms of 2011

July 2011 marks the first month of Nielsen’s new “Total Internet Audience” metric, which incorporates hybrid audience measurement data to provide a holistic view of online audience activity. Google was the most visited website in the U.S. in July with 172 million unique US visitors.

During May 2011 Google was the most visited website in the U.S. with 155 million unique visitors from home and work computers. The most visited sites among U.S. web users remained largely the same as the month before, while Apple switched positions with Wikipedia to become the 8th most visited site.
Overall web activity increased slightly in May, and among the Top 10 sites Apple witnessed the highest increase in monthly visitors, with more than 5.7 percent more uniques during May. Facebook also increased unique U.S. visitors by 4.7 percent compared …

According to November data from The Nielsen Company, the popularity of the Android OS among those who purchased a smartphone in the last six months (40%) makes it the leading OS among recent acquirers.

Nielsen’s research reveals that there is a clear progression in the preference for an iPhone among likely smartphone upgraders the more they have been exposed to the iOS.

Smartphones now account for 25% of the U.S. mobile market, up from 23% in the last quarter according to recent data from The Nielsen Company.

Whether it‘s checking email on the go, connecting with friends through social networks or using turn-by-turn navigation, the capabilities of smartphones are convincing more and more consumers to make the leap from a simple mobile phone to a more sophisticated device.

Smartphone adoption and use of mobile applications is rapidly increasing… what are the most popular apps and who is driving the growth?