Today Google released mod_pagespeed, an Apache module that automates many of Google's Page Speed optimization recommendations. The mod currently offers 18 configurable filters. You'll probably need root access to install this on your server, but Google is working with GoDaddy to bring this to shared hosting customers. Hopefully, other hosts will follow. Google is also working with CDN provider Contendo to bring mod_pagespeed to its service. If you use WordPress and want to implement some of these fixes without root access, you can try the W3 Total Cache plugin (which is still in pre-1.0 release).
November 4, 2010
Speed Up Your Web Site With Google's mod_pagespeed for Apache
Read more at ReadWriteWeb Hack