Rafael Siqueira is the CTO of Apontador, a company founded in 2000 that provides location-based services through its websites like Apontador.com and MapLink.com.br. Apontador has over 110 employees with headquarters in São Paulo and Curitiba. The company has seen significant growth, with its sites receiving millions of unique visitors each month. The document discusses the increasing importance of location data and services on mobile devices and the future of using location history and collective intelligence to provide personalized recommendations and targeted content to users. It envisions a future where social augmented reality and understanding people's real-world interactions can improve internet services and experiences.