Where the Risk Is Riskier Yet; A New Breed of Venture Capitalist Scouts Latin America
Venture capitalists are searching Latin American for opportunities to invest in promising companies, such as they have been doing in Silicon Valley; quest is complicated by often precarious nature of Latin American economies as well as relative lack of advanced technology, along with generally frenetic nature of young Internet industry; growth of venture-capital investing is part of wider trend of private equity investors focusing on Latin America's huge market; though region has quickly embraced Internet, it still has long way to go in terms of wealth and technology to catch up with richest industrial nations; StarMedia Network is one of first start-ups with focus on Latin America to get Silicon Valley-style cash and management help from US; Chase Capital Partners and Flatiron Partners initially invested $29 million to help company go public; that investment is worth roughly $360 million; various other projects detailed; graph; photos (M)