Google offers page speed service

Page speed is a brand new service offered by google which aims at making the web a lot more faster. Google has always focused on page speed and this is well reflected in most of it's projects. Now it has started offering this new service to willing webmasters. The concept of page speed optimization is quite simple. Google will fetch data from your servers, modify the data with best possible techniques to optimize speed and then serve to users from their server. This service is offered free of cost for now to a limited number of willing webmasters. Pricing details will be made public in future.

Link: http://code.google.com/speed/pss/index.html