Safeweb okays site but Norton blocks attack

I came across a site today I've never heard of:  downturk.com.  Safeweb gave the site all green checkmarks.  When I went to the url, I was immediatedly notified of a blocked attack.   I don't know what a mass injection website is but the site appeared when I was trying to get walkthrough information on a game.  Yahoo! search brings up dozens of urls with this site name in it.  I could not find any information abot the site.

 

Is there something else I should use beside Safeweb to check on an unfamiliar website?

 

I have a screenshot  but it's not being accepted as an attachment.  I keep being told the file is corrupted.  Tried it as a .gif and as a .jpg file, no luck.