2012年5月，有2.12亿美国人活跃在互联网上，浏览网页的时长高达29小时。Google以最多的用户量在美国排名第一，有1.73亿独立访客，然后是Facebook.com，有1.52亿独立访客，同时，youtube超过MSN/WindowsLive/Bing成为第四大网络品牌，Ask搜索网络首次在2012年进入Top10.
超过2.76亿的美国人估计拥有互联网连接，超过一半的活跃互联网用户（1.25亿）在5月份访问时事和全球新闻网站。
| Metrics | Total |
|---|---|
| Sessions/Visits per Person | 64 |
| Domains Visited per Person | 97 |
| Web Page Views per Person | 2716 |
| Duration of a Web Page viewed | 00:01:05 |
| Online Time per Person | 29:07:48 |
| # of People Who Went Online | 211,985,000 |
| # of People who had Internet access | 276,550,209 |
| Read as: Almost 212 million Americans were active online during May 2012.Source: Nielsen | |
| Rank | Brand | Unique Audience | Time per Person (hh:mm:ss) |
|---|---|---|---|
| 1 | 173,003,000 | 1:41:31 | |
| 2 | 152,718,000 | 6:53:34 | |
| 3 | Yahoo! | 142,959,000 | 2:31:17 |
| 4 | YouTube | 127,504,000 | 1:50:01 |
| 5 | MSN/WindowsLive/Bing | 126,811,000 | 1:22:04 |
| 6 | Microsoft | 92,725,000 | 0:47:03 |
| 7 | AOL Media Network | 85,071,000 | 2:23:56 |
| 8 | Wikipedia | 76,316,000 | 0:20:57 |
| 9 | Amazon | 76,100,000 | 0:33:59 |
| 10 | Ask Search Network | 74,269,000 | 0:10:40 |
| Read as: During May 2012, 173 million unique U.S. people visited Google websites.Source: Nielsen | |||
越来越多的美国在线获取新闻内容
2012年5月，57%的美国互联网用户访问时事&全球新闻网站，Yahoo!-ABC网站受众最高，有6200万受众，然后是 CNN Digital Network (39.6 million) 和 HPMG News Websites (formerly AOL News brands)
在前10大站点中，用户在CNN Digital Network 上花费的时间最高，平均每用户为35分钟，共产生16亿页面访问量，平均每人42页。总体上，美国人查看新闻更新的频率很高，当月平均有18次访问和共计耗时1小时22分钟
| Rank | Brand | Unique Audience | Time per Person (hh:mm:ss) |
|---|---|---|---|
| 1 | Yahoo!-ABC News Websites | 62,101,000 | 0:17:56 |
| 2 | CNN Digital Network | 39,559,000 | 0:35:27 |
| 3 | HPMG News Websites | 33,534,000 | 0:16:17 |
| 4 | MSNBC Digital Network | 30,175,000 | 0:15:03 |
| 5 | NYTimes.com | 29,248,000 | 0:19:16 |
| 6 | HuffingtonPost | 29,016,000 | 0:20:46 |
| 7 | Tribune Newspapers | 22,479,000 | 0:07:58 |
| 8 | Fox News Digital Network | 21,555,000 | 0:34:36 |
| 9 | Today | 15,960,000 | 0:08:52 |
| 10 | USAToday.com | 15,104,000 | 0:08:50 |
| Read as: During May 2012, 62 million Americans visited Yahoo!-ABC News Websites.Source: Nielsen | |||
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