Rick Roll Blocker от Joe Thompson

Never see a rick roll video again by adding page URLs to a blacklist.

Features:
- Add any public page URL to your own personal blacklist.
- Blocks any page in your blacklist by redirecting you to a safe page.
- Allows you to unblock URLs at any time or temporarily allow a rick roll if you want.
- Disable/Enable blocking with a single click at any time.
- Saves data to your browser but never shares with anyone else