Scandoo is Google Search wrapper that displays icons in search results that show if the page is safe or not. It is based on ScanSafe's web security technology, which does a database lookup and scans content in real time for each link in the search result. Because it’s a Google Search wrapper, you can use it to check your site by entering site:yourdomain.com to search all the pages in your site, for example to check my blog I entered site:amgadhs.com.
Their database depends on user feedback too, so if your site is Unclassified you could send them feedback by clicking on the Redefine link.