The statistic many web speeders quote 'a one second delay in web page responsiveness leads to a 7% decrease in conversions, an 11% drop in pageviews, and a 16% decrease in customer satisfaction' is kind of bullshit today. This quote comes from a 2008 study: a study that came out a few months after the iPhone SDK was released and Android Market came into being, before either proliferated. When that study was conducted, the iPad and Android tablet were a few years off. As web speeders, we can't quote a performance study that basically predates mobile. Yet, that's what we're doing.