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Here's the most prominent one that's happening now: http://www.incapsula.com/blog/semalt-botnet-spam.html http://www.incapsula.com/blog/semalt-botnet-spam.html
by michaelbuckbee 12y ago
Here's the most prominent one that's happening now: http://www.incapsula.com/blog/semalt-botnet-spam.html http://www.incapsula.com/blog/semalt-botnet-spam.html
Basically referrer spam.