Weird, I just went through firefox and I didn't get a warning?
Looks like you ignored it once, I am getting warning page.
I just tried from 4 different systems, including one that was a fresh install that had never had firefox opened before and it loaded the page without warning!
Looks like it's just chrome now. Mozilla has cleared things up, yet chrome is still spewing out malware warnings all over my Litecoin block explorer because of my coinurl ad