Yahoo! Open Hack Day Brazil took place in Sao Paulo, back in March. This video, in English and Portuguese, captures the creative spirit and the exuberant hackathon participants at Senac University:
Yahoo! Open Hack Day Brazil 2010 from Guilherme Chapiewski on Vimeo.
YQL Refresher: SQL Everywhere - Gaurav Vaish, Yahoo!
Firefox OS development workshop - Francisco Jordano, Telefonica