I switched over and immediately you notice that you aren't getting "custom" advertising, but the search results were pretty marginal. If I can't find stuff I need I'm back on giggle. Damn it. Maybe as they get more users their results will improve- here's hoping.
Funny I can find anything I want on there. Now places like the CDC and others are removing studies and websites are pulling their info left and right which might be what you are experiencing.