Nielsen Online found that some of the biggest social networking sites also were some of the fastest-growing during September. Facebook and LinkedIn appear to be growing by incorporating older users and their work lives. Another fast-growing site is Reunion.com, which is popular among visitors 55 to 64 years old. A list of the fastest-growing social networking sites follows.
|Rank||Site||September 2007 Unique Audience (000)||September 2008 Unique Audience (000)||% Growth|
|Source: The Nielsen Co., Custom Analysis|
|*Note: These Web sites do not meet minimum sample size
standards. Projected and average measures for these sites may exhibit large
changes month-to-month as a result.