Sara Diamond talks to Canvas8 about technology, politics and ideas of global/local. She discusses Canada's ties to documentary, the importance of enabling self-representation and Twitter's opinion-forming role at the recent G20 summit.

People are willing to show support for social causes – provided they don't have to do much - and brands are finding new ways to tap into the strength of the herd. By re-engineering menial actions – from buying body lotion to having sex – there are ways to reward everyone.

Tumblr is known for having cultivated a social justice and activist community. But is this micro-blogging and social-networking platform creating real-world social or political change? Does Tumblr activism translate to real life participation or is it still just slaktivism?

Young Brits are politically minded. 70% think social media should be used for social change, and a quarter are highly knowledgable about politics. Yet only 12% would definitely vote in a general election. Why are they so disillusioned? And is engaging via social media the answer?