I’ve always worked hard to optimize all my web apps (client caching, gzip compression, image compression, domain shading, css sprites, etc…). It’s great to see that it really does make a difference. wpostats.com shows the real stats and puts into hard numbers that perfomance does matter.

Spending time on improving page load time and app interaction time is super important. How important? Check these stats here: http://www.guypo.com/17-statistics-to-sell-web-performance-optimization/