CleanSpeak - Keep inappropriate content and trolls out of your community
Tweet-a-Cake by NotPie - Send anyone real life cake on Twitter
Moderate - Identify, mute, and block trolls in your Twitter feed
The Internet Warriors - Documenting the extraordinary world of online trolls
Block Together - A useful tool which helps you block trolls on Twitter.
Floom - Send stunning flowers from NY's and London's best florists