Top U.S. Web Sites and Brands for May 2010

Top 10 Parent Companies/Divisions for May 2010 (U.S., Home and Work)
Rank	Parent	Unique Audience (000)	Time Per Person (hh:mm:ss)	MOM UA % Change	MOM Time % Change
1	Google	160,791	1:57:02	1.4%	-0.5%
2	Microsoft	136,805	1:53:10	1.1%	-1.6%
3	Yahoo!	133,385	2:15:17	2.8%	-6.2%
4	Facebook	125,243	6:18:25	2.4%	-6.2%
5	AOL LLC	81,559	1:50:02	1.9%	-11.2%
6	News Corp. Online	76,116	0:49:37	-1.0%	-4.5%
7	InterActiveCorp	73,004	0:12:49	3.6%	-1.9%
8	eBay	62,453	1:20:00	1.0%	-3.1%
9	Wikimedia Foundation	60,870	0:16:04	2.4%	8.3%
10	Amazon	60,693	0:24:07	-0.2%	1.1%
Source: The Nielsen Company

Top 10 Web Brands for May 2010 (U.S., Home and Work)
Rank	Brand	Unique Audience (000)	Time Per Person (hh:mm:ss)	MOM UA % Change	MOM Time % Change
1	Google	153,033	1:12:52	2.0%	-4.4%
2	Yahoo!	133,269	2:15:21	3.8%	-6.3%
3	Facebook	125,243	6:18:25	2.4%	-6.2%
4	MSN/WindowsLive/Bing	112,233	1:45:36	1.0%	-0.7%
5	YouTube	97,078	1:08:40	3.2%	4.3%
6	Microsoft	86,732	0:40:26	0.7%	-3.0%
7	AOL Media Network	81,559	1:50:02	1.9%	-11.2%
8	Wikipedia	60,639	0:16:00	2.3%	8.7%
9	Apple	60,609	1:14:30	-0.9%	2.5%
10	Fox Interactive Media	58,804	0:56:15	-2.3%	-4.0%
Source: The Nielsen Company

Average U.S. Internet Usage, Combined Home & Work, Month of May 2010
Metrics	Current Month	Previous Month	% Change
Sessions/Visits per Person	56	56	0.0%
Domains Visited per Person	86	83	3.6%
Web Pages per Person	2460	2545	-3.3%
PC Time per Person	54:52:08	57:30:51	-4.6%
Duration of a Web Page Viewed	0:00:55	0:00:56	-0.5%
Active Digital Media Universe	198,007,044	197,578,927	0.2%
Current Digital Media Universe Estimate	236,513,000	236,245,000	0.1%
Source: The Nielsen Company