Latino pop superstar Ricky Martin is to front a series of public service announcements (PSAs) in a bid to warn South Americans about human trafficking and sexual exploitation. The singer, who has long campaigned to end the sex slave industry all over the world, will appear on Dominican television and radio for the next six months as part of his latest awareness drive. The PSAs are funded by the Llama y Vive (Call and Live) counter-trafficking campaign, which has already seen success in Costa Rica and Peru. In the ads, Martin will encourage those who feel they're in danger to call a phone line that offers free help and information about trafficking.