Another tip.

Go to http://www.mvps.org/winhelp2002/hosts.htm and download hosts.zip on your laptop and or computer. Heck even on n770. Unzip it.

on n770 open xterm and sudo gainroot.
then edit /etc/hosts
copy all the hosts entries in hosts file downloaded from mvps to n770 /etc/hosts.
This will make browsing faster as those sites will blocked. Adv will disappear from you web pages.