You talk about this "constant assault from spammers" like it's not Google's fault and it's an intractable problem. That is not a correct characterization. Ther

You talk about this "constant assault from spammers" like it's not Google's fault and it's an intractable problem. That is not a correct characterization. There are plenty of low hanging fruit that could easily be detected and deranked, for instance scraped stack overflow spam. But google chooses not to deprioritize these results. The reason they don't is that they make money on ad clicks, which many responses have already elaborated on.