[WTF] Seedspill Grasscampus

[NAT Mav]

Seeing two links to these sites pop up all over the place on various internet sites, including one parked on my host. Is this some new "Hacked By Chinese" exploit?

Examples:

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Welcome to Gardners Pitbulls - pitbulls for sale - pit bulls for sale - pitbull kennels - pittbull dogs - pit bull dogs