content: I hate to admit this, but I use Google's personalized search. Unless I have something to hide, I use that. It gives me surprisingly good results. It knows the categories I'm looking for and doesn't give me fluff very often. I get scholar results at the top, it assumes I want studies, and it assumes I'm an academic. I have invested many years in training it. It's surprisingly effective - except for images. It fucks those all up, unless I'm really specific.