1 - My work at the "pressure can" platform link
2 - Catarse: link - uses backbone / contributors
3 - Mini crowdfunding platform: link (see selfstarter.js and moip.subscription.js)
4 - Another platform, called "Truth or Dare": link - uses backbone
5 - MateriaBrasil, another project with backbone: link
6 - Festival de Ideias, another project using backbone: link - with Tokbox integration (I was using pusher and tokbox to make a chat room with video support)