http://www.reddit.com/r/WTF/comments/14q6ir/censorship_as_of...
Still up and with about 1500 comments.
Some posters there suggest that more explicit search terms will still bring up explicit material. I'm at work so I'm not going to test that right now. I'll leave the final word to someone smarter than me but it appears this may be more of an attempt to prevent people from stumbling onto porn accidentally than outright censorship.