Siteadvisor.com just come out of stealth mode. It advisors on webpages sites: "SA also sums up the results of this testing in a red, yellow, and green system of alerts. You can get a plug-in that will put those alerts next to every result on a Google results page. Hovering over the alert gives a summary. Clicking on it takes you to the full explanation. You can dive pretty deep into their analyses if you want."

Any beta fellows out there playing with it ??