I have been thinking on this idea lately and trying to build a tool to filter out the crap. What I have found is operators help, but the only things I have foun

I have been thinking on this idea lately and trying to build a tool to filter out the crap. What I have found is operators help, but the only things I have found to work are EDU sites, pre-2010 operator, and intext: welcome to my site. Beyond that, nothing seems to work to find complex content. I also thought about maybe making a tool to filter out content from the top million sites or so, but for now I am going to just use operators.