After Twestival: Lessons And Insights When A Signature Digital Social Venture Logs Off. Forbes. Published March 28, 2014.
Harvest Twestival in London 2008: where it all started.
Twestival Global 2009: 202 cities in support of charity: water
Twestival Local 2009 + 2011 in support of local charities around the world
Twestival Global 2010 in support of Concern Worldwide