Soley on their advertising incentives: no. It's a rhetorical flourish.

That said, I _do_ think it's extra important to pay attention to what Google does, for two reasons:

1. They're the largest entity on the Internet. This means their incentives are different than smaller players. 2. They _are_ an advertising company. Advertising companies make money by showing ads. They make more money by showing targeted ads. You target ads by collecting data on people.

I think people often forget Google's purpose in the world, and are simply dazzled by 'whoah cool stuff.' I appreciate some of Google's more interesting and ambitious initiatives, but get very scared when people start accepting any entity's actions without question. Specifically when that entity has large financial incentive to collect data about people.

There are, of course, many technical criticisms of SPDY, but none that rely specifically on the advertising angle.