The manager <a href="http://spankwire.in.net/" rel="nofollow">spankwire com</a>  SAN FRANCISCO - When asked to name the most notable rags-to-riches entrepreneur that his firm has funded, venture capitalist Ben Horowitz doesn't hesitate: Christian Gheorghe, a Romanian immigrant who came to the United States without speaking English, and rose from limo driver to founder of a business-analytics company, Tidemark.