There are many websites which host malwares (unknowingly) but they look like pretty nice and authentic sites in order to trap the visitors. Google Safe Browsing tool is a tool developed by Google which helps you to test a website which you think may not be authentic or has malware hidden in the source codes.
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Google has a list of the top 10 malware pages published. So the website gumblar.cn distribute malware to almost 60,000 Websever . googleanalytlcs.net (not to be confused with the Google service) has 20,000 servers. Google currently monitors 4,000 Web sites spreading malware, only 1400 are from China.
Google recently posted Most popular