To set PrivacyWall as your default search in Firefox,
Download the PrivacyWall Add-On
1. Click "Add to Firefox"
2. Click "Allow" in the Firefox dialogue box in the top left-hand corner.
3. In the same dialogue box, click "Install"
4. Finished! PrivacyWall is now your default search engine in Firefox.
All searches via your Firefox URL bar will now use PrivacyWall. Use Firefox's search bar to the right of the URL bar anytime you want to use another search engine. Make PrivacyWall your homepage or update extension settings in Firefox's Preferences panel.