> Previously, it worked by checking every site visit against a locally-stored list of known bad sites, which is updated every 30 to 60 minutes. > To block thes

> Previously, it worked by checking every site visit against a locally-stored list of known bad sites, which is updated every 30 to 60 minutes. > To block these dangerous sites the moment they launch, we’re upgrading Safe Browsing so it will now check sites against Google’s known-bad sites in real time. So this "upgrade" means you will submit your browsing history to Google in real time and will have to wait for the service to respond before every website visit. Sounds great, sign me up!