okay in one of my nights searching the internet and ubuntu forums i came a cross a nice tweak for Ubuntu. It involves messing with your etc/hosts file in order to block web sites that produce ads. Cool eh? Here is how:

1. back up your original host file located at etc/hosts
sudo cp /etc/hosts /etc/hosts.old

2. Download a good/updated host file here

3. Open your hosts file
sudo gedit /etc/