socnetstats01

							Sourcing: Please source all data to Nielsen Online. For more information about our sourcing guidelines, go to www.netratings.com Source: Nielsen Online US, Home and Work Month of January 2009

This is a custom list compiled by the Nielsen Online PR team with the help of our media analysts. While this list is not meant to Top 20 Social Network Sites, December 2008 Jan-09 Jan-08 YOY Growth Unique Time per Unique Time per Audience Person Audience Person Unique Time per (000) (hh:mm:ss) (000) (hh:mm:ss) Audience Person Site Facebook 62,444 2:50:04 23,346 1:01:31 167% 176% Myspace.com 60,603 1:35:47 59,613 2:20:03 2% -32% Classmates Online 19,452 0:09:07 13,992 0:08:53 39% 3% LinkedIn 14,705 0:14:05 6,456 0:10:56 128% 29% Reunion.com 12,458 0:05:10 3,968 0:04:13 214% 23% Windows Live Home 10,250 0:02:12 8,285 0:06:21 24% -65% Club Penguin 5,721 0:36:43 4,706 0:07:38 22% 381% AOL Community 4,574 0:12:43 4,323 0:33:13 6% -62% Twitter.com 4,556 0:09:03 N/A N/A N/A N/A Ning 3,777 0:15:02 1,172 0:06:08 222% 145% Tagged.com 3,770 1:03:59 2,130 0:05:33 77% 1053% Imeem 3,541 0:06:12 2,549 0:05:14 39% 18% Bebo 3,028 0:13:37 2,203 0:16:41 37% -18% Last.fm 2,873 0:03:17 1,233 0:08:48 133% -63% MyYearbook 2,464 2:00:15 1,809 1:02:43 36% 92% Flixster 2,399 0:05:35 2,871 0:05:01 -16% 11% Meetup.com 2,226 0:08:18 2,271 0:16:08 -2% -49% CarDomain Network 1,828 0:04:06 1,166 0:05:07 57% -20% Care2.com 1,820 0:02:53 1,327 0:05:20 37% -46% Gaia Online 1,731 1:59:35 1,121 2:44:45 54% -27%

hile this list is not meant to be exhaustive, it should give you a good idea of the significant players in each space. We periodically review the l

h space. We periodically review the list and add new sites, so the results may change accordingly.