I don't like Google or anyone else telling me what sites I should or shouldn't look at, so when their "nanny filter" broke today I had to giggle.
Doing a search for anything - no matter how "innocent" it might be will get you a page of results that are flagged as "harmful" for your computer.
See what I got when I did a search for "the pope":

From Fred:
Jeez! I was just talking to a friend about that and read your blog… Absolutely “any search”, even for Google Webmaster tools (??), after you click on any link you get: “Warning – visiting this web site may harm your computer!”
From MacKozer:
You can do the search for Google.com
It can also harm your computer
From Niall:
That’s not a nanny filter, it’s a malware filter. There’s a subtle difference.
From Michele Neylon:
Fred / Mackozer
It was flagging every single site on the internet as being dangerous – including all of their own ones
Michele
From Louie:
Someone got fired for that.
It didn’t last long, but enough to be noticed…