As Facebook grows in user base, their year on year growth rate has started to stabilize. It is just over half of the YOY growth last April (98%). The month-on-month traffic fell 10% this April. Here is the YOY growth rate of top social networks for April 2008:

MySpace : 3%
Facebook : 56%
Classmates : 12%
LinkedIn : 361%
Windows Live Spaces : -6%
AOL Hometown : -25%
Reunion : 20%
Club Penguin : -7%
BuzzNet : 104%
Imeem : 92%

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