Over the past 100 years, thousands of posters and advertisements have been created to warn or educate the public about STDs. Looking through today’s eyes, many older ones seem scandalous and politically inappropriate. Others are preachy, naive, sexy, scary, and everything in between. Perhaps more than anything, they tell the story of how society has viewed STD prevention and how our ideas about sex and sexually transmitted diseases have evolved over time. Check out our collection, where you can comment on a particular poster and vote for your favorites. The top ten choices will be announced later this year.