We have been reviewing mod_pagespeed over the past few months for possible inclusion into our shared hosting platform. After thorough testing, we’ve decided not to offer it with our shared hosting products. However, it will be considered for inclusion into our VPS platform.
As a result, we have concluded that mod_pagespeed simply is not a good fit for our shared hosting platform due to the complexities of configuring it for the many different types of sites that we host and because the gains are negligible. We do, however, plan to offer it for our VPS products later this year where the configuration can be better tailored to individual sites and any additional resources required to optimize the websites on the VPS do not affect other customers on the server.
If you have any questions regarding this decision, please comment or submit a support ticket!