There are several sites in the web that do security reviews of other sites:
http://hosts-file.net/
http://www.siteadvisor.com/
http://websecurityguard.com/
http://safeweb.norton.com/
http://www.mywot.com/
All of these enable checking a website for security without having to load the page. However, all of these sites base the reports on automated analysis (understandable in itself, it would be impossible to check all the sites on the net by hand) and many of these have a tendency to give out a lot of false positives. It's also noteworthy that the people who write comments for Siteadvisor seem to be usually extremely clueless about computer security and are just copying reports from other sites that may or may not have correct reports (the site rating is not based on the comments though but the McAfee TrustedSource analysis tool). This is the caveat with these sites.
Regardless, it would be a good guideline to keep out of a site if
all of these review sites report that the site in question is malicious.
I have at least one more link for a security review site, but I think I am not going to post it yet to keep this within the 5 links rule (though I'm not sure if it applies now since these are not links to any galleries).
Edit: Use Firefox, NoScript add-on for Firefox and a Linux based operating system (Ubuntu or Fedora are user-friendly alternatives, maybe Sabayon as well) if you want to be as safe as possible.