1. A system for dynamic caching of content of sites accessed over a network by a user, the system comprising: a processor; a first storage device for maintaining cache accounts for storing the content of the sites accessed over the network by the user based on activity over the network by the user with the sites; a second storage device for storing statistics; and a non-transitory physical medium, wherein the medium has instructions stored thereon that, when executed by the processor, causes the processor to: gather statistics on suitability of the sites for caching based on the network activity; store the caching suitability statistics on the second storage device; and dynamically create, delete, or resize the cache accounts based on the caching suitability statistics.