[ozzy47]

This is just a sample of the sites I have optimized for people, this is the latest site I worked on.

Before Optimization, http://www.webpagetest.org/result/140327_55_15GH/

After Optimization, http://www.webpagetest.org/result/140328_NB_362/

As you can see, there is a significant improvement in the page scores.

Cut the load time almost in half.
Took 1.331s off the First Byte Time.
Cut the bytes loaded to the users browser from 867 KB to 691 KB

So as you can see, optimizing a site running vB4 is possible.

Here is my site's test, http://www.webpagetest.org/result/140309_YB_R99/