GNU-zen

Facebook surveils everyone's web browsing regardless of whether they have an account or not, as described in this paper: http://ssrn.com/abstract=1717563 A simple way to prevent any packets being sent to or received from Facebook from your hardware is to set up filtering using iptables, a kernel-level firewall. On most GNU and Linux distributions, you can run the following three commands as root: iptables -A INPUT -d facebook.com -j DROP iptables -A OUTPUT -d facebook.com -j DROP iptables -A FORWARD -d facebook.com -j DROP The URL can be changed for other sites as well if you wish. Eg - for Twitter's "tweet" buttons run the same commands