Don't panic. Here's what linkscanner says why it blocked it on my computer:
Exploit: Link To Known Exploit Site
This page contains a link to a known exploit site. This link may or may not be active. It may or may not require you to click it to be infected. Some pages with such links automatically download the malicious code without any action on your part. Because of this we automatically block access to such pages
So if you haven't clicked on any of the links that are inside that first page you should be fine. To be safe, try some online scanners to see if you're infected. You can try zonealarm's, symantec's, kaspersky's sites and use their free online scanners. Trendmicro also has one called housecall.
So this doesn't happen in the future, you can use linkscanner's free lite version to punch in a dubious site's address before visiting. Or you can pay for the pro version and it'll automatically block it.
RTS