I clicked that and my virus blocker caught 15 trojans.
FF with AdBlock (NoScript optional): no warnings. I would guess that all those virus warnings came from the third party advertisement banners. After I started using AdBlock, I could visit even the most suspicious and random pages on the net and most of the warnings had disappeared. Better not to let the viruses to your computer at all than let them through when the antivirus gotta catch them all.
IE8 is still too dangerous browser to use as it's "married" with the OS, so a vulnerability there is more likely to compromise the whole system. Plus most of the exploits/malware target IE users exclusively.