Many of you may know this already, but for some, the 770 may be thier first Linux system.

You can block sights by adding bogus entries to the /etc/hosts file. I have my own small set of entries for sites that really bug me (Mostly flash ads).

DO NOT copy another hosts file to /etc/ The entries that are in there must remain.

Just add the bogus entries to the end of the file.

Reference link below for someone who maintains a huge host file for blocking sites.

http://everythingisnt.com/hosts