Spam is only hard if you're accepting low-quality content and not pruning it heavily. But Google can handle the scale of the spam, they just don't want to reduc

Spam is only hard if you're accepting low-quality content and not pruning it heavily. But Google can handle the scale of the spam, they just don't want to reduce it because the spam increases their ad real-estate. That's one theory, the other I would argue is that once you peel away the genuine spam and the blogspam, there really isn't much content left on the web (besides a small handful of big sites like Reddit) and Google knows this.