In the tradition of its Café com Browser the W3C Brasil Office opened the Café Semântico on October 15th. Speaker was Ivan Herman, W3C Semantic Web Activity lead. 30 participants gathered in th eCafé and more than 120 participated remotely on the Web. Participants were very actively commented and raised questions on twitter (@w3cbrasil, #cafecombrowser, #cafewithbrowser, #cafesemantico) and in the live chat. Ivan herman presented the basic concepts of Semantic Web, examples and the technologies behind and under them. This presentation will be available in video in the W3C Brazil Office web site. Slides are already available.