In a distant second place among social-networking sites, Facebook increased the number of visitors to 18.1 million, growing some 133% year over year. MySpace visitors increased 24% year over year.
The top 3 social networks’ number of visitors decreased slightly from August, whereas those ranked 3rd through 6th increased visitor numbers from the previous month. (Compare with August data.)
Among blog sites, Blogger increased its visitors a significant 50% from the year-earlier period, with second-place Six Apart Type Pad also growing – 46% – to nearly 11 million visitors in Sept.
The most significant year-over-year growth, however, came from third-place WordPress, which increased unique visitor some 290%, from a mere 2.7 million in Sept. ’06 to more than 10.4 million this September.
(See this chart to make month-to-month [Aug. '07 vs. Sept. '07] comparisons.)