I've found that not including Google Analytics, Twitter buttons and that sort of stuff plays a major part in loading time. Despite the fact that those scripts h

I've found that not including Google Analytics, Twitter buttons and that sort of stuff plays a major part in loading time. Despite the fact that those scripts have the 'async' tag, they still impact loading time. Heck, I get the feeling that they impact loading time more than my own CSS, images and Javascript. I already heavily minify and concatenate everything, as well as use SPDY for improved concurrent requests, but it seems Google and Twitter add 1-2 seconds.