When I search 'dc plane crash' in Google, Bing, and DuckDuckGo I don't get results buried under ads. When I search 'air conditioner for sale' I do get ads at the top of each of those, but that's more okay because I am looking for things to buy. And it's easy to look past the ads to get to sites like home depot or other traditional retailers that come up not just because they purchased ad space.