VAS Ventures is Martin Varsavsky's early stage investment fund. They are looking for companies whose innovative founders think big and are courageous enough to shape the future. Martin is a serial entrepreneur, mentor, professor of entrepreneurship at Columbia Business School and investor. As a founder, he has built 5 successful companies, Viatel, Jazztel, Ya.com, Fon and Prelude. Viatel, Jazztel...