For years, even the most innocent of Google searches might have pulled up a naughty picture or link. But thanks to a new tweak to Googles search algorithm that seems to have taken effect on Wednesday in the U.S., your Google inquiries are totally SFW — unless you dont want them to be. In other words: Google just made it harder to find porn. Google changed the computer program that spits back links and images when you type in a search phrase, Casey Newton at CNET reports. While sexually explicit material is not completely blocked from the Internets most popular