Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
PeerBlock will work, you'll have to grab the right lists, leave the HTTP blocking on, and then whitelist trusted sites when you need to.
One more thing I'd recommend is (if you're using Firefox), grab the BetterPrivacy extension.
What are the right lists?