There were various Firefox plugins that implemented something like that, and they've been heavily criticized for the additional cost to the websites. One I use

There were various Firefox plugins that implemented something like that, and they've been heavily criticized for the additional cost to the websites. One I used was called Fasterfox. "Prefetching is considered an aggressive practice when it's initiated by the client, and plug-ins like Fasterfox have been widely criticized for supporting it" http://books.google.com.uy/books?id=DyVgAez6yg8C&pg=PA296&lpg=PA296&dq=fasterfox+criticism&source=bl&ots=n2arp5etMs&sig=XTHJ6_f-sXpYO_GX7s5k9THtRWw&hl=en&sa=X&ei=O7szT56nGeX40gGn2uzDAg&redir_esc=y#v=onepage&q=fasterfox%20criticism&f=false http://books.google.com.uy/books?id=DyVgAez6yg8C&pg=PA29...