One of that problems is Parallelize Downloads. When you have JS, CSS, IMAGE and all those kind of files serving from 1 single domain it slows down the speed.
Did you heard about Content Delivery Networks?
A CDN serves the static content of your site from multiple servers arround the world depending on where your reader is.
As you can imagine this services are expensive and if you’re like me you can’t pay for that.
There is a solution to cheat on Google’s Page Speed.
1. Create a Sub Domain
Create a subdomain like I did cdn.quicoto.com.
1. Upload static content
Upload the static content there (some CSS, JS and IMAGES).
Am I speeding up my site?
[UPDATE] Well in fact you’re. Check out the comment for the full explanation 😉