Nielsen//NetRatings announced that April’s top 10 social networking sites collectively grew 47% YTY, increasing from an unduplicated unique audience of 46.8 mln 2004 to 68.8 mln in April 2006, reaching 45% of active Web users. MySpace topped the list with 38.4 mln unique visitors and a remarkable YTY growth rate of 367%. Blogger took #2 spot, garnering 18.5 mln unique visitors and growing 80% YTY, followed by Classmates.com with 12.9 mln unique visitors and a 10% YTY increase. YouTube and MSN Groups rounded out the top five, with 12.5 mln and 10.6 mln unique visitors, respectively.
| Top social network sites | |||
| Audience, 000 | Growth | ||
| Social Network | Apr 2005 | Apr 2006 | YTY |
| MySpace | 8,210 | 38,359 | 367% |
| Blogger | 10,301 | 18,508 | 80% |
| Classmates.com | 11,672 | 12,865 | 10% |
| YouTube | N/A | 12,505 | N/A |
| MSN Groups | 12,352 | 10,570 | -14% |
| AOL Hometown | 11,236 | 9,590 | -15% |
| Yahoo! Groups | 8,262 | 9,165 | 11% |
| MSN Spaces | 1,857 | 7,165 | 286% |
| TypePad | 5,065 | 6,711 | 32% |
| Xanga.com | 5,202 | 6,631 | 27% |
| Source: Nielsen//NetRatings | |||