The least user-friendly version of `Freedom' I could come up with

.bashrc

# ~/.bashrc

# Freedom!
freedom () {
    sed '/# FREEDOM/{n;s/^#//;}' < /etc/hosts > /tmp/hosts.$$ &&
        sudo mv /tmp/hosts.$$ /etc/hosts
}
 
disable-freedom () {
    sed '/# FREEDOM/{n;s/^[^#]/#&/;}' < /etc/hosts > /tmp/hosts.$$ &&
        sudo mv /tmp/hosts.$$ /etc/hosts
}

README

You should not do this. You should use http://macfreedom.com/ or friends.

$ freedom

later …

$ disable-freedom

It’s not quite Freedom in that you can disable it at will. It should really use `at(1)' or some sort of boot-time process for that.

etc-hosts

# /etc/hosts

127.0.0.1 localhost
# ...

# FREEDOM
127.0.0.1 twitter.com facebook.com news.ycombinator.com getprismatic.com buzzfeed.com # ... many, many more ...