Here is a novel idea - tell someone they may have gotten a sexually transmitted infection from you by sending an anonymous e-card. The cards are available from the Internet Sexuality Information Services and are like a birthday card except that they encourage the recipient to get tested, instead of sharing blessings. The cards are available free nationwide, but the site requires the sender to click on a geographic region before sending the card so that location-specific information about where the recipient get tested can be provided.
As odd as this sounds, this is an important service given that most sexually transmitted infections produce no symptoms and untreated, they can lead to Pelvic Inflammatory Disease and infertility. Teens have very high rates of sexually transmitted infections