Ah, but just because you see Google ads, it doesn't mean that was all the website tried to serve. They probably ran a waterfall, asking AppNexus, Pubmatic, Tra

Ah, but just because you see Google ads, it doesn't mean that was all the website tried to serve. They probably ran a waterfall, asking AppNexus, Pubmatic, TradeDesk and 40 other ad providers for an ad at $5, $2, $1, etc. before giving up and serving a Google ad...