Just a few hours ago in the latest virus database update the site “hxtp://trackmill.com/coloraze/” (a game page with levels link) and ALL other link within the web site is block due to this
But this scan https://www.virustotal.com/en/url/7bd0caf0b45c1fcb686976fd7297cc4b14e4c52aabdf45819c98556495e3944b/analysis/1381421922/
and this scan http://scanurl.net/?u=http%3A%2F%2Ftrackmill.com%2Fcoloraze%2F&uesb=Check+This+URL#results
look clean
EDIT: Weird this block only triggered when I am using IE, but not triggered on Firefox