I frequently refer to #Google as a #PornHostile or #Pornocalypse search engine. It's a difficult case to make with objective rigor, though, because they're sneaky fuckers about it.
Want a demonstration? In 2010 I wrote 2000 ranty words about how professor Shira Tarrant used an obviously made-up statistic in a #porn article she wrote for #alternet: http://www.erosblog.com/2010/11/29/college-professor-alternet-porn-statistics-fail/
I just tried to find my ErosBlog post by searching her name. Google won't show it anywhere in the results. QED