BlockParty - Real-time voice chat rooms from the creators of turntable.fm
Live Phish Plus - Unlimited access to the entire LivePhish catalog
Referrer Spam Remover - Remove spam bots from your Google Analytics data
Moderate - Identify, mute, and block trolls in your Twitter feed
Phishero - Test your organisation's resiliency towards phishing attacks
Twitter One Click Block - Add a block button for a simple one click blocking.