Sometimes you just cannot help it, you find yourself with time on your hands and you go snooping around in places that normal folk just do not venture. So it was with security researcher Michael Sutton who spent an entire day plugging through the Google blacklist, the Google encoded/hashed blacklist and the Google domain whitelist.
The blacklist, in case you did not know, contains a huge listing of URLs that Google suspects might be involved in phishing activity, and forms the basis of the Google Safe Browsing tool for Firefox, and the new Firefox anti-phishing filter for that matter. Both of these allow for user feedback when a suspect site is stumbled upon, and one must assume that this is how the blacklist is compiled although Google itself is keeping schtum.